Task: Dialogue Generation
Input (English): F: May I help you? ,M: Yes, when is the next train to London? ,F: Oh, let me check. It leaves in 20 minutes.
(A) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) M: Look! The inner space of this train is big, and here is my seat. (C) M: Thank you. This is a nice ticket office. Please give me the air ticket. (D) M: Thank you. This is a nice ticket office.
Output (English): D