You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example Input: Sentence1: Hi. Can you please help me find a restaurant that serves food from singapore ? I'd like it to be on the East side of town if possible. Sentence2: Thank you for using the Cambridge restaurant system. Goodbye. Sentence3: Yu Garden is located on the east part of town. Would you like the telephone and address? Sentence4: What is the address, phone number, and postcode? Sentence5: Can you help me find some Chinese food then? Sentence6: There are no restaurants serving Singaporean food on the east part of town. Sentence7: Thank you, goodbye. Sentence8: Yu Garden is located at 529 Newmarket Road Fen Ditton, C.B 5, 8 P.A, and the number is 01223 248882. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: You're welcome, glad I could help. Sentence2: I personally like Parkside Pools. It's in the center of town, on Gonville Place. Sentence3: Any area is fine. Which of the 4 swimming pools do you suggest? Sentence4: It is cb11ly. Is there anything else I can help you with? Sentence5: Where will you be departing from? Sentence6: Thanks. That was all I needed. Goodbye. Sentence7: I am departing from Cambridge. Sentence8: I am looking for information on places to go in Cambridge. Can you help with that? Sentence9: My destination is london kings cross Sentence10: Can I get the postcode as well? Sentence11: I can help with that. Is there a particular area you're interested in? Sentence12: Yes, there are 4 swimming pools that match those requirements. Is there a particular area you would like to go to? Sentence13: There are 278 trains that meet that criteria. Would you like to narrow down your options by departure site, destination, or arrival time? Sentence14: I have made that reservation and your reference number is 1702SDBO . Sentence15: TR1502 arrives in london kings cross friday at 11:51. Would you like me to book you any seats? Sentence16: I also need a train leaving after 11:00 on friday Sentence17: What I'd really like is to find a swimmingpool. Sentence18: Yes book for 8 people and I need a reference number Question: Who has spoken the sentence 13? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Sure, do you prefer the west or the centre part of Cambridge? Sentence2: loch fyne is an expensive place that serves sea food. can we book? Sentence3: Okay I have done that and their reference number is H2OPFSBQ . Sentence4: Thanks, lastly, I need a taxi to take me to the restaurant from the hotel, I want to get there before the booked time. Sentence5: Thank you, have a nice day. Sentence6: I'm also looking for a place to eat in the city centre. maybe bistro food? Sentence7: The cambridge belfry is available. Would you like me to book you a room? Sentence8: I don't care about the area but I need it to be cheap with free wifi. Sentence9: Sorry there are no restaurants in the centre of town serving bistro food. Sentence10: You're welcome. And thank you, you, too! Sentence11: Your taxi will be a red audi. Should you need to contact them, the number is 07971260313. Sentence12: Can you help me find a 4 star hotel to stay at? Sentence13: Done! Your reference number is CU4LPL6C . Do you need help with anything else? Sentence14: Yes. Let's say 15:00 on the same day, with the same group of people. Sentence15: Yes, please. I need four nights starting Sunday, for two people. Sentence16: Okay. What about one that serves seafood instead? Question: Who has spoken the sentence 1? (A) User (B) System
Example Output:
Answer: (B) System