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

[Q]: Sentence1: Yes sir! Soul tree nightclub is a good one. they are at 8 market passage, postal is cb23hx and phone number is 01223519224, is there anything else that I can assist with? Sentence2: Pick a good one for me. I need the phone number and postcode for it too. Sentence3: Sala Thong is an expensive Thai place in the west. They're located at 35 Newnham Road, cb39ey. Sentence4: Can't wait to come party at one of your nightclubs in town. Sentence5: There are 5 nightclubs in the centre and one in the south. Would you like more information on one of them? Sentence6: Thanks, that is all for today. Goodbye. Sentence7: You're welcome, have a good day. Sentence8: Can you give me information on a restaurant called Sala Thong? Question: Who has spoken the sentence 3? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: What day are you travelling? Sentence2: You are very welcome. Enjoy your day too. Bye. Sentence3: I'd like to book 3 tickets on the train arriving at 19:08, please. And would it be possible to have a reference number for the booking? Sentence4: I will need to leave from Cambridge if that's ok Sentence5: I have a train that arrives earlier at 18:08 and one that arrives just before your specified time at 19:08. Sentence6: Sure. Where will you be leaving from? Sentence7: I was wondering if you could help me in finding a train to the airport. Sentence8: OK, you have 3 tickets reserved on TR4447, departing Cambridge at 18:40, arriving Stansted at 19:08. Total fee is 30.29 GBP. Reference #5VRJSMSE . Will that be all today? Sentence9: Yes, it will. Thanks so much. Have a nice day. Sentence10: On Wednesday. I need the train to arrive by 19:15. Question: Who has spoken the sentence 7? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: When are you planning to travel? Sentence2: Yes, the 18:40 would work, how much does it cost? Sentence3: The earliest train after that time is TR7696 that leaves at 18:40 and arrives at the airport by 19:08. Would that work? Or, I have later trains. Sentence4: The price per ticket is 10.10 pounds. Would you like me to go ahead and book it for you? If so, for how many tickets? Sentence5: enjoy your stay in cambridge! Sentence6: Yes, thank you. Sentence7: That's OK, no thank you. Are there any nightclubs in town? Sentence8: Monday. I need to leave after 18:15 Sentence9: Yes there's 6 in the centre and 1 in the south. Sentence10: No thank you that is all. Sentence11: What's the postcode for the one in the south? Sentence12: Please help me book a train from Cambridge to Stanstead Airport. Sentence13: Is there anything else I can do for you? Sentence14: The nightclub called the Place is located at the postcode cb23hg. Question: Who has spoken the sentence 13? (A) User (B) System
[A]:
Answer: (B) System