Task: Dialogue Generation
Input (English): M: When does your flight take off, Mary? ,F: At 3:15 PM. There are just 2 hours left so I'm leaving now.
(A) M: I’m sorry, I don’t understand. Could you say it again? (B) M: I didn't realize it is 1:15 p.m. now. (C) M: It's 2:15 p.m. now. Your flight will take off in two hours. (D) M: It's 3:15 p.m. now. Your flight has taken off, hasn't it?
Output (English): B