Task: Dialogue Generation
Input (English): M: I need to book a flight online. Can you help me? ,F: Sure. I use a website called Kayak.com. That compares the prices of many different airlines. They also have a cool quality where you can look at flights a few days before and a few days after your scheduled dates to find the best price.
(A) M: Thank you. I will compare different airlines at this travel agency. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: I am glad that you think it is useful to look at flights at flexible dates. (D) M: Sure. The travel agency will choose nonstop flights for me.
Output (English): C