Task: Dialogue Generation
Input (English): F: Did you buy anything when you went to Paris? ,M: Yes, I bought a briefcase. ,F: What's it like? ,M: It's a large leather one.
(A) F: The steel briefcase your bought looks nice. (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: Why did you buy a suitcase in London? (D) F: What a lovely cigarette case you bought!
Output (English): B