Given the task definition, example input & output, solve the new input case.
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.
Example: M: Excuse me. How much is this suit? ,F: It's on sale today for $750. It's normally $900. ,M: Wow, that is pretty expensive! I was thinking that it might be 4 or 500. ,F: This material is imported from Italy. It's the finest in the world, and if you bought a suit made of this material at many department stores, you would pay about $2000. ,M: Uh-hah. But isn't that the point of coming to a market like this, to get a discount compared to the expensive department stores? Besides I saw a suit just like this one a few stalls down, and they were selling it for $600. I still thought that it was too expensive. ,F: It's possible that the suit you saw was the same color is this one but made of a different material. Unfortunately, our prices are final, and we think there are the lowest anywhere in the city.
(A) M: Okay, I'll buy it at the price you want. Here, it's $600. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: Although the material is imported from France, it is not worth the $750 you want. (D) M: You want $900 for the suit? It's too expensive!
Output: B
Options (A) and (B) are not corrct because the suit's price is 900. Option (C) isn't correct because the material was imported from italy.

New input case for you: 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. ,M: Oh, that quality is very useful. But this is for my aunt and uncle, and their dates are fixed. They're coming out here for my sisters wedding. But they have to fly out the day before and leave the day after. ,F: I see. Where are they coming from? ,M: New York City. Oh, it's not a very long flight. Do you think they care more about prize or convenience? ,F: They definitely want a non-stop flight. They had a bad experience changing planes in Philadelphia once. So they only fly non-stop now. ,M: Got it. So 2 adults, flying nonstop from New York to Chicago, leaving May twenty eighth and returning May thirtieth.
(A) F: OK. I hope your parents can come to Philadelphia soon. (B) F: That is right. They will come to Chicago soon. It is so exciting. (C) F: I am really sorry, I did not catch that. Would you slow down, please? (D) F: Yes. Since we are in New York, we should send your parents to airport.
Output:
B