Task: Dialogue Generation
Input (English): M: Hello, may I speak to Mr Brown? ,F: I'm sorry, he's out for lunch. Would you like to leave a message? ,M: Uh, what time do you expect him back? ,F: Say in half an hour. ,M: Thank you. I'll try back later.
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: OK. I will tell you where he is when you come again. (C) F: OK. I will wait for your call in 15 minutes as he will be back by then. (D) F: OK. I will tell Mr. Brown your message.
Output (English): A