Hmm.... what gate is your flight leaving from?

Now move a few feet to your left (or right) and look at the board/screen/display with arriving flights. What flight is due to arrive at your (departing) gate some time (perhaps a half hour or so) before you leave? Where is it coming from? Is it delayed? When is it due in?

Failing that, call the EXP desk.

Rocket science - ain't it great?