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

[Q]: Sentence1: No, that's all I needed. Thanks for your help today! Sentence2: Can you search for a guesthouse that includes free wifi? Sentence3: The Avalon doesn't have room for 5 nights starting Monday. How about a different day or a shorter stay? Sentence4: That sounds perfect. Can I book it for 5 nights starting on Monday for 3 people? Sentence5: No, that doesn't matter, but I'd like something in the moderate price range. Sentence6: Avalon is available for four nights starting on Monday. Your reference number is 59GZA6ME . Can I do anything else for you? Sentence7: There are 14 options. How about the Avalon? It has 4 stars and free parking and wifi. Sentence8: You are welcome. Thank you for calling the Cambridge TownInfo Centre. Goodbye. Sentence9: Let's try 4 nights. Sentence10: We have 23 such places. Any preference on area? Question: Who has spoken the sentence 3? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: Yes, please. I need to book the train for 8 people. Sentence2: enjoy your stay in cambridge! Sentence3: TR2125 leaves a 09:01 and arrives by 10:01. Would you like a ticket? Sentence4: Thanks! I also need a train to Broxbourne on Thursday. Sentence5: I'm looking for places to go watch entertainment. Sentence6: Fantastic, thank you very much. I don't need anything further today! Sentence7: There are 5 entertainment venues in Cambridge. Do you have an area in mind? Sentence8: There are quite a few options. Do you have a preference for departure or arrival time? Sentence9: I don't mind the area. can I get the address to one of them? Sentence10: Yes I was able to book that for you and your reservation number is 648C0A9S . Sentence11: Yes, I want to depart from Cambridge any time after 8:30. Sentence12: The Funky Fun House is amazing. I think you'll love it. Their address is 8 Mercers Row, Industrial Estate. Question: Who has spoken the sentence 4? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: I need to arrive by 8:30 Sentence2: Sure, I can help you get here. Where will you be leaving from? Sentence3: Thank you! Can you please tell me the phone number, entrance fee, and address? Sentence4: I will be coming in from Ely on Tuesday. Sentence5: Glad to have been of help. Please reach out again if you need anything else. Thanks for using the Cambridge TownInfo centre. Have a great day. Sentence6: I can help you with that. Do you have a certain departure or arrival time? Sentence7: Great I also am looking for some info on a place called sidney sussex college Sentence8: the phone number is 01223338800 and address is Sidney street Sentence9: Ok, great. Then it will get me there in time. Can you book me 8 tickets please? Sentence10: thanks. that will be it for now Sentence11: I have booked your train for 8 and a cost of 35.2 GBP. Your reference number is 53GSF184 . Can I help you with anything else? Sentence12: I am planning a trip in Cambridge. Sentence13: What time does it arrive? Sentence14: Okay the TR6971 leaves at 07:35. Does this work? Sentence15: It arrives at 07:52. Would you like to book tickets? Sentence16: I can help with that. Sidney Sussex College is a college in the centre. Do you need any other information? Question: Who has spoken the sentence 2? (A) User (B) System
[A]:
Answer: (A) User