Task: Dialogue Generation
Input (English): M: Hello, Viola. I see that you take this book with you all day. What book is it? ,F: A wrinkle in time. ,M: You had a birthday party last weekend. So is this book a birthday gift from your friends or classmates? ,F: It is a birthday gift. My uncle sent it to me from New York.
(A) M: Wow, that's a special gift from your classmate. No wonder you carry it everwhere. (B) M: So your friend gave you the book as Christmas gift?  You must like it very much. (C) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) M: Wow, you got an uncle in Shanghai. When did he send the book to you?
Output (English): C