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

[Q]: Sentence1: book a table for 6 people at 11:15 on tuesday at the Hakka Sentence2: Sure what type of food are you wanting to eat? Sentence3: Do they have free wifi? Sentence4: I booked the taxi, it is a yellow tesla the contact number is 07809860598. Is there anything else I can assist with today? Sentence5: I will need a taxi to get to the restaurant. Sentence6: Booking was successful, and your reference number is TDVD6XSM . Is there anything else I can assist you with? Sentence7: That is all, thank you for your help. Sentence8: The Hamilton Lodge sounds perfect for you. Would you like to know more? Sentence9: I'm glad we were able to help. Sentence10: I would like to find an expensive restaurant in the north part of Cambridge. Sentence11: Yes, they do have internet. Shall I make a booking? Sentence12: There 2 of them - the Hakka and the hotpot. Which one would you like to try? Sentence13: Yes please. I want 4 nights from tuesday, and for 6 people. Give me the reference number too. Sentence14: I am looking for a hotel in the same area that has free parking. Sentence15: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 48WF5G7X . Can I help with anything else? Sentence16: How about chinese food? Question: Who has spoken the sentence 15? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: I am also looking for a place to stay at a 4 star hotel near the restaurant. Sentence2: I was able to book a room for 5 people, 5 nights. Your reference # is 5DD52JOS . Can I help you with anything else today? Sentence3: I prefer something cheap. Sentence4: Yes, for 5 nights on the same day. I also need the reference number. Thanks! Sentence5: Lets go with charlie chan, I would like to to book a table for 5 people at 11:00 on wednesday. Sentence6: Okay, have a great day! Sentence7: Need a place to dine, chinese near centre. Sentence8: The Alexander Bed and Breakfast is cheap, would you like to book it? Sentence9: There are three options, charlie chan, rice house and golden house. Can I book you for one of those? Sentence10: Are either option cheap? Sentence11: There are two located in the same area. alexander bed and breakfast and university arms hotel? Sentence12: I think that is all I need today. Thank you for all your help. Sentence13: I have 10 places. Would you like a certain price range? Sentence14: Your booking was successful, the reference number is B1FIKA09 . Question: Who has spoken the sentence 3? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: Please book that one for 7 people. Sentence2: I also need a place to stay in the east area. Sentence3: No, that will be all. Thank you! Sentence4: Thank you for using Cambridge TownInfo. Goodbye! Sentence5: How about on Monday? Any train leaving after 19:00? Sentence6: I would recommend TR6223 which leaves Leicester at 19:09 and arrives in Cambridge by 20:54. Sentence7: I have 7 places to stay in the east. Did you have a certain price range or other preferences? Sentence8: There is a train leaving at 5:09 on Friday and arriving at 6:54. Sentence9: I have the warkworth house located at warkworth terrace. Would you like reservations? Sentence10: Yes please for 7 people and 2 nights starting on Friday. Sentence11: Done! Your reference number is 02RUTRTJ . Can I help you with anything else? Sentence12: Need to know the train schedule from leicester to cambridge Sentence13: I would like a 4 star hotel in the moderate price range that includes free parking. Sentence14: Your booking was successful. Your reference number is X16ZO0Y8 . Question: Who has spoken the sentence 1? (A) User (B) System
[A]:
Answer: (B) System