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 would like a four star hotel, and I don't need free parking. Sentence2: Certainly, there are 44 attraction in the town centre, do you have a type of attraction you would like to visit? Sentence3: I don't have any in particular. What would be the highest rated attraction in that area? Sentence4: There are 32 hotels with free wifi, do you have any other things you require in a hotel? Sentence5: I am looking for places to go in the centre. Sentence6: Sounds great. Can I book 8 people for 2 nights starting Tuesday? Sentence7: there are a total of 79 attractions in Centre what type of attraction that you are looking for? Sentence8: No. That's all I needed. Thanks! Sentence9: Are there any museums available? Sentence10: Could you recommend me a hotel that is cheap? Sentence11: I would recommend the Acorn Guesthouse which is 4 stars, moderately prices and offers both free wifi and parking. Sentence12: I am looking for a hotel with free wifi. Sentence13: That sounds great. Can I get the postcode for Castle Galleries? Sentence14: Hmm, let me see...I think maybe a moderately priced 4 star hotel might be better. Do you show any availabe? Sentence15: Yes the postcode is cb23bj. Is there anything else I can help you with? Sentence16: I don't have rating information, but Castle Galleries in nice, and admission is free. Would that interest you? Sentence17: Great. Thank you for contacting Cambridge Towninfo Centre. Have a great day. Sentence18: How about a and b guest house, unless you have any other specifics. Sentence19: You are all booked at the Acorn Guest House. Your reference number is LXMFRZLR . Do you need assistance with anything else? Sentence20: How about the autumn house? It has 4 stars, is in the cheap price range and has internet. Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Do you need anything else? Sentence2: no that will be all thank you Sentence3: There are several swimmingpools as well as a park and a boat attraction in the north. do any of these appeal to you? Sentence4: sure, do you need some information? Sentence5: It doesn't matter when I arrive, but I need to make a booking for 5 people. And I definitely need a reference number for the booking. Sentence6: Okay, have a great day! Sentence7: The address is milton country park, milton, cb46az. Will that be all? Sentence8: No thank you. Sentence9: Booking was successful, the total fee is 151.19 GBP payable at the station, your reference number is EM5AYOET . Will that be all? Sentence10: Can you give me the address for the park? Sentence11: I am planning a trip in Cambridge. Sentence12: I need to book a train from Cambridge to Leicester, leaving after 20:00 on Sunday. Sentence13: There are 4 options leaving after 20:00, by what time do you want to arrive in leicester? Sentence14: Actually, I could use some help finding something fun to do in the north. Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: It has 2 stars. May I help you with anything else? Sentence2: Yes, I'd like to book a table for 7 for Sunday at 14:45. Sentence3: Thank you for using our system! Sentence4: Your car from the Ashley Hotel to Graffiti is booked.The car type is a Black Volkswagen and the contact number is 07898395762. Is there something else I can assist with? Sentence5: When would you like to leave? Sentence6: Great thank you so much that's all I needed today. Sentence7: I've booked your reservation at Graffiti for Sunday 18/06/2017 for 7 people. Reference number 3GQ3ITLZ . Sentence8: It is on Hotel Felix Whitehouse Lane Huntingdon Road. Would you like me to book it? Sentence9: Where do you want to be picked up? Sentence10: I just need to get to the restaurant by the time the reservation starts. Sentence11: Certainly. Where are you departing from and where are you going? I also need the time you are leaving or need to arrive. Sentence12: No, not really. It just needs to be a hotel. Sentence13: Excellent. I'm also looking for a place to stay. It should have free parking and free wifi. Sentence14: How about the Ashley Hotel? It is on the North side of town and has free wifi and free parking. Sentence15: Hello. I'm trying to find a restaurant called Graffiti. Can you help me locate it? Sentence16: Please have the taxi pick me up at the hotel. Can I get the taxi contact number and car type? Sentence17: That sounds like it might be great - how many stars does the Ashley have? Sentence18: An hour after I arrive at the restaurant sounds about right. Sentence19: I can help with that. Is there a particular area that you would prefer to stay in? Sentence20: I also need a taxi to take me somewhere. Question: Who has spoken the sentence 10? (A) User (B) System
[EX A]:
Answer: (A) User