Task: Dialogue Generation
Input (English): M: Nice to see you, Mary! Come in, please! ,F: Thank you Tom, but I am afraid not now. I've come only to return the book borrowed from you.
(A) F: You can borrow Shakespeare's books here. (B) F: You can buy some food in this store. (C) F: I am really sorry, I did not catch that. Would you slow down, please? (D) F: Come in, come in.
Output (English): D