Task: Dialogue Generation
Input (English): F: Have you brought the book I lent you? ,M: I'm sorry, it completely slipped my mind, I promise I will bring it tomorrow.
(A) F: I didn’t hear you. Please could you tell me again? (B) F: It's OK. You can bring me the book tomorrow. (C) F: You have lost the book I lent you? Why are you so careless? (D) F: Why can't you lend me your book? I want to read it.
Output (English): B