Task: Dialogue Generation
Input (English): M: Look at this white mark, you've ruined my table. How am I ever going to make it look nice again? ,F: Relax, I know how to do it. All we need is some wood oil, and some hard work to rub it in.
(A) M: OK. Let's paint the walls white. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: Well. We are going to buy a new one. (D) M: Let's get rid of the mark on the table to remove the green mark.
Output (English): B