Task: Dialogue Generation
Input (English): F: I'd like to go to hotel Stratford on the fifth Avenue, please. ,M: There's some road work going on near the post office. So I'll have to take a different route. The map says it will be around a 20 minutes.
(A) F: Sir, how many  postcards do you want to send? (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: I will take the train at 5:00, could you send me to train station on time. (D) F: Sir, here is your room card, take the elevator to your room and have a good rest in our hotel.
Output (English): B