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

Q: Sentence1: I'm sorry. I changed my mind. I don't want a guesthouse. Are there any hotels with 2 stars? Sentence2: Great that was all I needed today, thank you. Sentence3: Is there a particular area you would like to stay in? Sentence4: There isn't a guesthouse with 2 stars and free internet available. Is there another type of hotel I can look up for you? Sentence5: Great Glad I could be of help to you. Sentence6: I have you booked in the Ashley hotel. Your reference number is CW6YMT0B . Is there anything else I can do for you today? Sentence7: No, just any 2-star hotel with free wifi will do. Sentence8: Hi, I need a guest house please. Sentence9: Do you have a specific location you want to be? Sentence10: No, but I need free wifi and I would like a 2 star guesthouse please. Sentence11: I have 3 guesthouses all in the moderate price range. Would you like me to choose one for you? Sentence12: I found 3 for you all in the expensive price range. Can you please give me the details so that I may book it for you? Sentence13: Yes, how about a guesthouse with 3 stars and free wifi instead? Sentence14: I would like it for 6 people for 2 nights starting on Wednesday. Question: Who has spoken the sentence 11? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: Thank you very much for your help. Sentence2: How about a 2 star rating in the moderate price? Sentence3: Great. Is there anything else I can help you with today? Sentence4: You have a room at the Ashley, reference number 1IIKBZBL . Sentence5: How about some restaurant suggestions within walking distance of the hotel. Any indian cuisine or african cuisine that's expensive? Sentence6: Sweet! Can I also get some information on hotels? Sentence7: Sorry about that, I can look for a restaurant later. That's actually all I need today, thank you! Sentence8: I show 79 of them, is there a certain area of town you prefer? Sentence9: how about broughton house gallery? Sentence10: Of course, ashley hotel and lovell lodge both meet that criteria. Would you like to book with one of them? Sentence11: Ok great! Thank you for reaching out to Cambridge TownInfo centre, I hope you enjoy your stay! Goodbye! Sentence12: Does it have free wife and parking? Sentence13: Surprise me! I'd like the address, fee and postcode. Sentence14: Sure. I have 33 hotels in my database. Can you please provide me with the area, price range, and features you are looking for? Sentence15: Either one is fine, I need to book for 1 starting sunday, 4 nights. Sentence16: the broughton house gallery is located on 98 king street, is free to enter, and the post code is cb11ln. Sentence17: I am looking for places to go. Can you tell me about some museums? Sentence18: No, it doesn't. Sorry about that. Question: Who has spoken the sentence 1? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: Please pick one and send me their address and postcode Sentence2: I really wanted to stay in the centre. How about a museum? Sentence3: I would really like it to be entertainment. Sentence4: Yes do you want it near the attraction ? Sentence5: Does architecture interest you? Sentence6: There are 11 museums in the centre is there a type of museum you prefer? Sentence7: I would like some information about interesting places to go in the center of town. Sentence8: Yes, can you help me find a place to eat? Sentence9: I'm sorry, we do not have any entertainment attractions in the city center. Would you like me to check in another part of the city? Sentence10: Whipple museum of the history of science is located at free school lane, postcode cb23rh. Is there anything else you need today? Question: Who has spoken the sentence 6? (A) User (B) System

A:
Answer: (A) User
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