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

[Q]: Sentence1: Tuesday, going to Cambridge please. Sentence2: The TR8685 arrives by 5:52 and costs 4.40 pounds. Can I book some seats for you? Sentence3: You're welcome. Have a great day. Goodbye. Sentence4: The Broughton House Gallery is located at 98 King St and has free admission. Sentence5: The train should leave on tuesday and should go to cambridge and arrive by 10:15 Sentence6: Thank you, that sounds fine. I see you have included the address and the entrance fee. That's all I need. Thanks very much. Sentence7: Great thank you I also am looking for some place to go in the centre of town. Sentence8: Please for 8 people. Sentence9: I'm looking for a train that arrives by 10:15 and departs from Ely Sentence10: Your booking was successful. The total fee is 35.2 GBP pounds payable at the station and your reservation number is 1OBF5WF2 Sentence11: No problem! What day would you like to leave? Sentence12: Any departure time in mind? Question: Who has spoken the sentence 1? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: You're welcome. Can I help you with anything else? Sentence2: That is all. Thanks Sentence3: The post code is CB11JG. Sentence4: Thank you, what's the post code? Sentence5: Thank you for your help Sentence6: Cambridge, parkside police telephone number 01223358966. Sentence7: I need to get to the nearest police station, can you assist me? Sentence8: Okay. Have a good day and thanks for using our system. Question: Who has spoken the sentence 4? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Yes. After dinner I'd like to go to parkside pools. What is the address and postcode? Sentence2: Are you sure the entrance fee isn't listed? It should be. Sentence3: Thank you so much for all your help. That will be everything today. Sentence4: Yes hi, I'm looking for an expensive place to dine. Sentence5: Restaurant Two Two serves French food and is very expensive. Will that work for you? Sentence6: I can provide that for you. Parkside pools is located on Gonville Place and their postcode is cb11ly. Can I help with anything else? Sentence7: The north that serves tuscan food and is insanely expensive, money is no object. Sentence8: Did you have a particular area you would like to visit? Sentence9: That sounds lovely. What's their phone number, address and postcode? Sentence10: The entrance fee isn't listed, but the attraction type is swimmingpool, and the number is 01223446100. Sentence11: Yes, can I also get their entrance fee, phone number, and attraction type, please? Sentence12: No, the entrance fee is not listed. Sentence13: We have no matching records for that. Would you like to change something? Sentence14: Your welcome. Have a great day? Sentence15: That is disappointing. How about some French food? Sentence16: Their phone number is 01223351880. They are located at 22 Chesterton Road Chesterton, post code cb43ax. Is there anything else I can help you with tonight? Question: Who has spoken the sentence 3? (A) User (B) System
[A]:
Answer: (B) System