Short Conversation 办理搭乘手续

A:Can I see your passport，please？

B:Here it is.I would like an aisle seat.

A:Let me check.Yes,we have an aisle seat for you.It's forty-five C.

B:Good.I will take it.

A:How many bags are you checking in?

B:Two.Can I take this bag with me as a carry-out？

A:Yes，you can.Here are your claim tags and boarding pass.You will be boarding at gate twenty-eight.

B:How long does it take to go through the security check？

A:It looks very congested today.You should start heading to the gate at least thirty minutes before boarding time.