Here is the key: Look at the Class letter on the ticket Y is full coach (refundable) everything else (H,B,V,Q,T)is restricted and requires you to call either 72,48,24 hours before the flight (depending on elite status). You should have a head start as well because you are in a time zone ahead of the US. The fare basis code tells me that you likely to be in Q class "QDEL285."
Are you going to KCI or MCI (Kansas City).
You will love it.
Formerly known as BSL