I am trying to get DL award ticket from
SIN to CAN (CZ354)

Or

KUL to CAN (CZ350) (Already hold 2I from here, but can't get two more I's)

on Aug 26, 2013

I need to 4 I class tickets around 1pm departure time.
I found I has 4 tickets on Flightstats.com for SIN-CAN portion (CZ354)

but when i called dl, I was told only 2 tickets or zero tickets from the agent.
I check Wandr.me, it does shows only two available in I.

I use free service on expertflyer, that shows the business class seat infact, all seat is available but 4 seats are blocks for the first row.

Wonder is that anyway CZ will long sell this portion of the seat from 2I to 4I.

I need advise, cause I am traveling with two kids and really hope 4 of us can be on the same flight. I am silver elite, was advise $150 for change fee in the future is the 354 is offer more tickets, but I don't want to lost my others segments of the reservation that already on hold.

Thanks you so much,
Coco