Task: Dialogue Generation
Input (English): M: Excuse me, Madam? ,F: Yes? ,M: How long can I keep the book? ,F: For one month. Please make sure you return the book before it's due.
(A) M: What book do you want to buy? (B) M: The class is over. Let's have lunch together. (C) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) M: Of course. Then I'll borrow this book.
Output (English): D