Task: Dialogue Generation
Input (English): M: I am going to the post office now. What would you like to have? ,F: Please get some air mail stamps.
(A) M: I need to catch my plane now. (B) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) M: OK. I'll buy some post cards from the post office for you. (D) M: You want pork or beef?
Output (English): B