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

[Q]: Sentence1: There are 44 possible options. What type of attraction are you interested in? Sentence2: No, that's all I need today. Thank you for your help. Sentence3: I can book a 05:54 for you. Sentence4: You're very welcome, is there anything else I can do for you? Sentence5: I need the train to leave after 15:45 please. Also do you have the entrance fee for the Vue Cinema? Sentence6: Sorry, but I do not have the entrance fee for Vue Cinema in my database. I do have a train from stevanage at 15:54 for you, though. Sentence7: Hello, I'm looking for places to go in the city centre. Sentence8: Have a great day then! Sentence9: How about the Vue Cinema located at the grafton centre, east road? Sentence10: Thank you for your help. Sentence11: Great can you make that reservation on the train for 7 people and send me the reference number? Can you also send me the phone number for the Cinema? Sentence12: I don't mind what kind. Sentence13: Sure, what is the entrance fee? Also I need a train that departs from Stevenage on Thursday. Sentence14: The train is booked reference number 3YY4QV9P, and the phone number of the Vue Cinema is 08712240240 Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: The hotel should be in the moderate price range and should include free wifi. Sentence2: Booking was successful. Reference number is : WJFFGVWD . Is there anything else I can help you with? Sentence3: I've found several hotels in the moderate price range. Is there a specific area of town you're looking to stay in? Sentence4: How about the Acorn Guesthouse? Free wifi and moderate price range. Sentence5: Sure, book me for 2 people for 5 nights starting on Monday? Sentence6: That will be all. good bye. Sentence7: Yes, I'm looking to stay in the north. Sentence8: I am actually looking for a hotel. Is the Acorn Guesthouse listed in that type? Sentence9: No, it is not. How about Ashley hotel? Sentence10: I'm looking for lodgings that are moderately priced. Sentence11: Good bye, enjoy your stay. Sentence12: I've found 11 possibilities for you. Would you prefer a guest house or a traditional hotel? Question: Who has spoken the sentence 4? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Thank you very much. That is all I need. Bye. Sentence2: Ok. You are booked for 5 seats on TR5874. Wednesday at 09:59. The total is 83 GBP payable at the station. Your Reference number is 8C6ZLYNK . Sentence3: I'd be happy to. Assuming you're departing from Cambridge, what day and time would you like to travel? Sentence4: I'd be happy to reserve your room. How many nights would you like to stay, and how many in your party? And do you need any other information about the location? Sentence5: Yes, I'd like five tickets, please. Sentence6: I am, it is a guesthouse in the north. Would you like to make a reservation? Sentence7: I need to depart on Wednesday. I'll need to arrive by 1245. Sentence8: I have a train leaving cambridge at 9:59 and arriving at london liverpool street at 11:27. Would you like me to book that for you? Sentence9: Thank you for using Cambridge TownInfo centre. Please remember us for all of your future travel needs. Sentence10: Hi, are you familiar with the Avalon hotel? Sentence11: I would love that. Can you book me a room starting on Friday night? Sentence12: I need a train that stops at london liverpool street and should arrive by 12:45, will you book it for me Question: Who has spoken the sentence 4? (A) User (B) System
[A]:
Answer: (A) User