You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
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Question: Sentence1: That should do. I am also looking for a place to dine. The restaurant should serve Chinese food and should be in the expensive price range Sentence2: Can you help me find an interesting place to visit on the east side of town? Sentence3: Sure do, know of any interesting ones on the east side? Sentence4: Yes, I would like it to be in the east. Sentence5: That is all, thank you! Sentence6: cb13ef. Anything else? Sentence7: I can. Do you like museums? Sentence8: The Yu Garden has fabulous food. Can I book a table there for you? Sentence9: I have many choices. Do you have an area preference? Sentence10: I'm sorry, could I get the postcode to Cambridge Artworks? Sentence11: I'm sorry I have to go now! Bye! Sentence12: Absolutely. You can reach Yu Garden at 01223248882. Is there anything else I can help with today? Sentence13: I also need to get the phone number for the restaurant. Sentence14: Okay great. Glad I could be of help. Sentence15: We have the Cambridge Artworks, the Cambridge Museum of Technology, and several galleries. Sentence16: Thanks for contacting the Cambridge TownInfo Centre and have a great day! Question: Who has spoken the sentence 15? (A) User (B) System

Answer: Answer: (B) System

Question: Sentence1: looking for a train going to Cambridge. Sentence2: How about TR3350 that leaves at 05:17? Sentence3: you can book it. get me the reference number too Sentence4: I am leaving on Sunday and need to arrive by 13:00 Sentence5: Thank you for using our services. Sentence6: Thank you that is all I needed. Sentence7: W8YHJKSV is the reference number Sentence8: What day and time are you wanting to travel? Question: Who has spoken the sentence 2? (A) User (B) System

Answer: Answer: (A) User

Question: Sentence1: The only hotel that matches your criteria is "express by holiday inn cambridge." Do you need help with booking? Sentence2: I really would like a 4 star hotel. Is there one in the moderate price range, then? Sentence3: I have confirmed your booking at carolina bed and breakfast starting Monday for 4 nights. Your reference number is RTNZCSBJ . Is there anything else I can help you with? Sentence4: Carolina Bed and Breakfast sounds nice. Could I have it booked for 6 people for 4 nights starting on monday? Sentence5: It has 2 stars. Would you like to book? Sentence6: Can you find me an expensive place to stay that is located in the east? Sentence7: Does that hotel have a 4-star rating? Sentence8: We have 3 that satisfy that criteria. A and B guest house, Carolina Bed and Breakfast, and Warkworth House all fit. Do you have a preference? Question: Who has spoken the sentence 5? (A) User (B) System

Answer:
Answer: (B) System