Definition: In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.
Input: F: Intercity Flowers. How can I help? ,M: Hi, I'd like to send a dozen red roses to arrive at my apartment tomorrow for my grandparents' wedding anniversary, please. ,F: Certainly, sir. I just need a few details to complete the order? What's your name, please? ,M: Obama Anthony. ,F: Mr. Anthony, have you ordered with us before? ,M: Yes, I have. I've got a customer number. It is UR250BUT.
(A) F: Excuse me, could you repeat the question? (B) F: Uh, sorry. UR250BUT is your father's customer number. You may not be able to use it. (C) F: Fine. Please wait a minute, I'll use your customer number UR250BUT to comfirm your information. (D) F: You mean you have a customer number which is UR520BUT, but you haven't ordered with us before.

C