Task: Dialogue Generation
Input (English): F: How many countries have you been to? ,M: America, Australia and Britain. I'll go back home in France tomorrow.
(A) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (B) F: So you're from America, but you haven't been to Australia yet, have you? (C) F: So you come from France, and you haven't been to Australia yet, have you? (D) F: So you come from Australia, and you haven't been to Britain yet, have you?
Output (English): A