Originally Posted by
ExpertFlyer Voice
We took a look at the example dates you emailed us and there aren't any published Q fares for those dates for SIN->DXB, which is why you can't use the availability on those flights. You need both availability and a published fare in a given fare class to be able to book a ticket in that fare class.
Thanks. That's really strange, because I was trying to change dates on an existing flight. Will send details over email.