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

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
Answer: (B) System

Sentence1: Okay, the TR8944 leaves at 15:39 and arrives by 17:07. Would you like me to book tickets for you? Sentence2: There are 10 trains leaving fro Liverpool Street on Thursday. Did you have a departure time in mind? Sentence3: Okay I have booked you and your reference number is WLUOQKEV . Sentence4: rosa's bed and breakfast is in the cheap price range Sentence5: I'm looking for a train departing from london liverpool street leaving on thursday. Sentence6: Do you need a taxi? Sentence7: Goodbye, and thanks again. Sentence8: Yes, I don't want to leave for Cambridge until 15:00 at the earliest. Sentence9: Sure thing. Thanks for letting us help you today! Sentence10: Thank you. I also need a hotel in the south. Sentence11: then thanks for inquiring with us. Sentence12: I don't need a taxi, thanks for asking Sentence13: No price range but I do want a 4 start. Sentence14: Yes, for 6 people. Sentence15: What price range are you interested in? Sentence16: That sounds great. I'll need a reservation for 6 people for 4 nights on Thursday. Sentence17: I've gone ahead and booked that for you. Your Reference number is : EUZ34KY9 . Is there anything else I can assist you with today? Sentence18: No, that takes care of everything I need. Thanks! Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System

Sentence1: Bummer! I guess I'll try some asian oriental food then Sentence2: Yes, there are many. What is your destination? Sentence3: Wonderful! I think that's all I need for now, thank you so much for your help! Sentence4: TR8604 leaves at 15:36, would this one work for you? Sentence5: Sure, I can help you with that. Do you have a preference in food type or price range? Sentence6: Booking was successful, the total fee is 123.2 GBP payable at the station . Reference number is : KSHHCWCE . Sentence7: Yes, that would be find. I'll need to book tickets for 7 people. Can I have the reference number please? Sentence8: I have two that fit your criteria! Dojo Noodle Bar, and J Restaurant are both in the city centre area. Do you have a preference? Sentence9: My destination is Norwich departing from Cambridge. Sentence10: can you suggest one and I need the address, postcode and their phone number too please Sentence11: Yes, do you have a place that serves corsican food? I also need it to be on the cheap side. Sentence12: I'd recommend the Dojo Noodle Bar. The address is 40210 Millers Yard City Centre. The postcode is cb21rq. The phone number is 01223363471. Sentence13: Thank you! Can you help me find somewhere to eat now? Sentence14: You're welcome, have a great day! Sentence15: No, unfortunately, I do not have any cheap Corsica restaurants. Would you like to look for another restaurant? Sentence16: Do you have any trains leaving after 15:00 on Thursday? Question: Who has spoken the sentence 14? (A) User (B) System

Answer: (A) User