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Simultaneous Submit to overcome Z1 inventory

Simultaneous Submit to overcome Z1 inventory

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Old Feb 23, 19, 11:43 am
  #16  
 
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Originally Posted by audio-nut View Post
If the TA has guaranteed sell then it would overbook Z. I doubt DL gives that to anyone other than maybe partner airlines though.
Whatís guaranteed sell?
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Old Feb 23, 19, 8:07 pm
  #17  
 
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Originally Posted by SamOF View Post


Whatís guaranteed sell?
When availability is displayed in the GDS (and my knowledge is limited to Sabre), it is accurate as of the moment the GDS responds to the request. A separate entry is made to "sell" the inventory, and if another user somewhere else beats your "sell" entry for the last seat in a given booking class (regardless of when the availability request was made), the GDS will not confirm the seat. It is possible to sell inventory without even making an availability request--the request to see what's available for sale is totally independent of the request to sell a seat.

There are times when lags between various GDS, the airline res system, etc., cause inventory to not be instantly synched, but the airlines accept this as a cost of doing business and will honor any sell request that is confirmed by the GDS. If "guaranteed sell" is a thing, it more likely applies to a carrier's guarantee of honoring a sell request that is confirmed by the GDS even if the airline has zero availability in its native reservation system.
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Old Feb 23, 19, 10:01 pm
  #18  
 
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I think the answer here is that...hey, you might get lucky, you might not. In theory you shouldn't, but the airfare gods are random and capricious and stranger things have happened.
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Old Feb 23, 19, 11:01 pm
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I would hit the purchase button at DL.com then the OTA. It might work out.
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Old Mar 27, 19, 9:26 pm
  #20  
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confirming firsthand A1 can yield two A tickets via simultaneous submit for $600 one-way flat beds on HA. you’ll never see more than A1 between LAX OGG towards end of schedule
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Old Mar 28, 19, 10:53 am
  #21  
 
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Originally Posted by Colin View Post
confirming firsthand A1 can yield two A tickets via simultaneous submit for $600 one-way flat beds on HA. youíll never see more than A1 between LAX OGG towards end of schedule
Some good explanations above.
Another factor to consider is that Yield Management fare allocations are dynamic.
  • obviously dynamic in the sense that if a flight is A1, and you buy an A seat, instantly the flight goes to A0.
  • but also dynamic in the sense that if that your transaction caused A to hit a threshold, then the flight would be re-analyzed by the YM software. This would be via a 2nd (internally generated) transaction. The 2nd transaction may decide to reset to A1 (or whatever). On the mainframe, that 2nd transaction most likely finished way before your browser had displayed the results of the 1st transaction back to you.
So to your human eyes, it may appear to you as if "simultaneous submits" are "tricking" the system; but behind the scenes, that's not true.
In between your 2 "simultaneous" transactions, the mainframe probably processed (and completed) several hundreds (if not thousands) other transactions.

My experience is with Sabre, which could apply to HA but not DL. However, most airline reservation systems run on a similar mainframe operating platform, so high level concepts are similar.
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Old Mar 28, 19, 11:34 am
  #22  
 
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Hey - if you want to try, go for it.

Remember, if it fails, you have 24 hours to cancel the ticket you may no longer want.
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Old Mar 28, 19, 12:28 pm
  #23  
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thatís a lot of words that donít dispute the fact that simultaneous submit works for HA A1 to get more than one seat, from first hand experience this week.

no one who cares about getting the lowest price should accept the naysayers in this thread that itís not possible.
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Old Mar 28, 19, 12:40 pm
  #24  
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Originally Posted by Colin View Post
thatís a lot of words that donít dispute the fact that simultaneous submit works for HA A1 to get more than one seat, from first hand experience this week.

no one who cares about getting the lowest price should accept the naysayers in this thread that itís not possible.
Its a lot of words that you dismiss, showing don't understand the basics of how computer systems work. It's impossible to submit at exactly the same time. Even if it's only 1/10th of second off, that's a world apart in computer processing time. Second, as noted and you seem to dismiss, being Z1 doesn't mean that when someone buys Z1 that it goes to Z0. The computer will evaluate per whatever parameters RM has set if it should goto Z0 or add a seat and keep at Z1.
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Old Mar 28, 19, 12:41 pm
  #25  
 
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I wonder if it makes a difference (i.e. helps) if the OTA is selling a bulk/consolidator fare that books into Z, but is an opaque fare.
I'd probably try it with DL.com first, and if the OTA fails you have 24hr to cancel with Delta.
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Old Mar 28, 19, 12:50 pm
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Originally Posted by Colin View Post
thatís a lot of words that donít dispute the fact that simultaneous submit works for HA A1 to get more than one seat, from first hand experience this week.

no one who cares about getting the lowest price should accept the naysayers in this thread that itís not possible.
Are you familiar with Confirmation Bias?
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Old Mar 28, 19, 1:14 pm
  #27  
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the way it works on HA, despite the know it alls who haven’t tried what i just literally did this week, is that one that one submit tickets normally and the second submit gets a PNR only with no eticket. it takes some extra minutes until the 2nd submit gets ticketed.

literally no one cares about the distinction of simultaneous vs. really really close.

the only relevant data point is that, for HA, if you attempt simultaneous submit, you will achieve your desired goal.

i buy on HA all the time. sometimes just one ticket. and the A1 goes to A0 after one ticket. for days , forever often.



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Old Mar 28, 19, 1:19 pm
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Originally Posted by Colin View Post
the way it works on HA, despite the know it alls who havenít tried what i just literally did this week, is that one that one submit tickets normally and the second submit gets a PNR only with no eticket. it takes some extra minutes until the 2nd submit gets ticketed.

literally no one cares about the distinction of simultaneous vs. really really close.

the only relevant data point is that, for HA, if you attempt simultaneous submit, you will achieve your desired goal.

i buy on HA all the time. sometimes just one ticket. and the A1 goes to A0 after one ticket. for days , forever often.





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Old Mar 28, 19, 1:24 pm
  #29  
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yeah, it is. at HA, there’s obviously an exception process to not reject and instead save the PNR without ticketing in the case where the inventory disappears just after submit. it is this exception process that enables a savvy traveler to sneak an A inventory seat that HA didn’t want to otherwise sell.
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Old Mar 28, 19, 1:52 pm
  #30  
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Originally Posted by Colin View Post
yeah, it is. at HA, thereís obviously an exception process to not reject and instead save the PNR without ticketing in the case where the inventory disappears just after submit. it is this exception process that enables a savvy traveler to sneak an A inventory seat that HA didnít want to otherwise sell.
Does it work with DL?
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