F: Flight 331 is being announced. I'd better be on my way. Goodbye. Thanks for all your kind hospitality. ,M: You're welcome. Happy landing.
(A) F: Peter! Professor Wang is asking you a question. (B) F: You too. Safe flight to you. (C) F: Excuse me, where is the boarding gate for Flight 300? (D) F: Excuse me, could you repeat the question?
B