Task: Dialogue Generation
Input (English): M: Excuse me, would you mind if I use your stapler? ,F: Help yourself. It's on the desk over there. Oh, I'm sorry, it has been lent out.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: I have take the stapler away. (C) M: You owned it. (D) M: Somebody else has take away the book.
Output (English): A