Originally Posted by davidtai

I have experienced the exact same case you have mentioned. Since I found 2 award seats available, I wanted to reissued a ticket for myself and was planning to book the same flight for my mum. I asked the agent on phone and he reassured me that there were enough seat for 2 when I was in the process of reissuing the ticket. But the availablitliy was instantly gone right after my ticket was suscessfully reissued.
I should have asked the agent to do the reissue and make a new booking for my mum simutaneously.