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

[EX Q]: Sentence1: I have found 5 that fit that description. Is there a particular area you would like? Sentence2: I would like to book a table for 6 at 15:15 on Tuesday. Sentence3: Yes. I would like it to be in the expensive price range. Sentence4: Can you find me a Chinese restaurant please? Sentence5: Sure. There are 17 chinese restaurants in town. Are you looking for a certain price range or location? Sentence6: Thank you for contacting us and enjoy your meal at the hakka. Have a great day. Sentence7: Yes, thank you. That's all for now. Bye! Sentence8: I was able to get a table at Hakka in the north. The reference number is 7KW8MVL3 and they'll keep the table for 15 minutes. Does that suit you? Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: 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
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Absolutely! The postcode is CB11JG! Sentence2: great, have a good day Sentence3: I have been robbed and am looking for help. Can you help me? Sentence4: Actually, I can't find it on my phone. Can you give me the postcode of the station? Sentence5: I hope you get your belongings back. Sentence6: the nearest police station is located at Parkside, Cambridge and the phone number is 01223358966 Sentence7: thank you very much for your help. Sentence8: glad i could help bye Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]:
Answer: (B) System