Task: Dialogue Generation
Input (English): F: Excuse me. Could you tell me where the principal's office is? ,M: I'm sorry. I'm just visiting a friend here.
(A) F: Oh, you are here visiting a family member? I'm surprised that you won't wait at the entrance. (B) F: OK, I'm surprised that you just said you couldn't show me the direction. You have been living here for years. (C) F: OK, I'm surprised you just said that you've met me somewhere before. (D) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly?
Output (English): D