Task: Dialogue Generation
Input (English): M: Did you all have a good time on your visit to Paris? ,F: Yes, but we all missed Bob.
(A) M: Why did you miss Bob? (B) M: I didn’t hear you. Please could you tell me again? (C) M: I didn't realize you missed traveling instead of Bob. (D) M: Since Bob didn't travel with you, why didn't you miss him?
Output (English): A