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

Input: Consider Input: Sentence1: Thank you for using the Cambridge Town Info Centre Services. I hope you enjoy your time in Cambridge! Sentence2: is it in moderate price range? Sentence3: Do you have anything in the moderate price range? Sentence4: Most of our nightclubs are right in the center of town. Kambar is my favorite. Sentence5: No, thanks. Can you find a gastropub restaurant in the centre, please? Sentence6: it is an expensive gastropub Sentence7: Yes, there's the the cow pizza kitchen and bar. Sentence8: They're located on Corn Exchange Street. Would you like me to make a reservation for you? Sentence9: Awesome! Can you provide me with the address, entrance fee, and postcode, please? Sentence10: The address is 1 wheeler street cb23qb and admission is 5 pounds, would you like their phone number? Sentence11: I am looking for something fun to do while in town. A nightclub would be nice. Sentence12: What is their address? Sentence13: backstreet bistro is an expensive gastropub in the centre area. Would you like more information? Sentence14: No, I just need information for today. You have answered all of my questions. Thanks so much. Bye. Question: Who has spoken the sentence 1? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Is there any Indian food on the west side of town. Sentence2: You're welcome. May I help with another query? Sentence3: Cocum is located at 71 Castle Street City Centre and their phone number is 01223 366668. Their price range is expensive. Sentence4: The price range doesn't matter. Sentence5: There are 6 Indian restaurants in the west part of town. What price range do you have in mind? Sentence6: There are no Hungarian restaurants in the west of town. Would you like to change your query? Sentence7: I would like a Hungarian restaurant in the west of town. Sentence8: Yes, but just for one. Sentence9: Would you like the name, address and phone number of a few of them? Sentence10: Goodbye. Sentence11: Thank you! Sentence12: Nope, I'm good. Thanks again. Question: Who has spoken the sentence 9? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: You're welcome, let me know if I can assist with anything else. Sentence2: I would like to know if you can book me a room for 5 nights starting Friday. I also need the reservation # Sentence3: sorry i am not able to find it Sentence4: Thank you. That is all that I need. Sentence5: I switched the booking to 3 people, and the new reference number is FW6X5F78 . Sentence6: How about one that serves Indian food instead? Sentence7: There are 5 that match you criteria. Tandoori palace is a great place, shall I book a table for you? Sentence8: Are there any expensive international food places in the west area? Sentence9: Tandoori Palace, 68 Histon Road, Chesterton. Post code cb43le. Is there anything else? Sentence10: Hi. I'm looking for a relatively expensive international restaurant to dine at this evening. Is there one that you would recommend? Sentence11: I need the Bridge Guest House for 3 people. I forgot to include that. Sentence12: what do you mean? you're the one who recommended it. Sentence13: I could not find any expensive international places to eat. Do you have any other preference? Sentence14: Well. I also need the hotel called Bridge Guest House. Sentence15: sure, i have their info. what would you like to know? Sentence16: Could I get address and postcode Sentence17: Nothing in the west,another area? Sentence18: I have booked a room for you for five nights at the Bridge Guest House, beginning on Friday. Your reference number is R175R6S0 . May I assist you with anything else? Question: Who has spoken the sentence 12? (A) User (B) System
Output: Answer: (A) User