Task: Dialogue Generation
Input (English): M: Excuse me, I'm mailing this package to Japan. ,F: Alright. Fill out this form about the contents and value. Do you want to insure it? ,M: I don't think so. It's only some books. ,F: Are you sending it surface mail or airmail? ,M: Airmail, please.
(A) F: So, you want to send it by surface mail? Okay, fill out this form just about the contents. (B) F: So, you want to insure it and you want to send your package by airmail? (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: So, it's only some pens and you want to send your package by airmail?
Output (English): D