Task: Dialogue Generation
Input (English): M: What's the postage on this letter to Mexico please? ,F: How would you like to send it? ,M: By registered airmail. ,F: $0.90 please. And please write down the postal code in the mailing address, anything else? ,M: Yes, I'd like 6 postcards and 1,050 cent stamps please. ,F: All right, here you are. ,M: And this packages for London. Will you wait for me? ,F: Yes, of course. This package is 10 grams overweight, you'll have to pay $0.50 extra for the overweight.
(A) M: I am really sorry, I did not catch that. Would you slow down, please? (B) M: Sure. 50 more cents are not expensive at all for the package. (C) M: Sure. 50 more cents are not expensive at all for the letter. (D) M: Well, 90 more cents are a little expensive for the package.
Output (English): B