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

Input: Consider Input: 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

Output: Answer: (B) System

Input: Consider Input: Sentence1: No, I'm not picky. Sentence2: I need a hotel with FREE parking Sentence3: The acorn house is moderately priced, 4 stars, and in the north. Sentence4: What is your arrival date and how many days will you be staying, please? Sentence5: I am looking for a place to stay. The hotel should have a star of 4 and should be in the type of guesthouse Sentence6: Thank you goodbye Sentence7: Okay. What part of town do you want to stay in? Sentence8: How about acorn house? They have excellent reviews. Sentence9: I'm sorry I don't need a reservation. Could you just confirm the price range, postcode and what area that is in? Sentence10: Thanks so much. I won't be needing anything further today. Sentence11: You read my mind. Yes, free parking. Sentence12: Do you have a specific pricerange you are looking for? Sentence13: Any part of town as long as it includes free parking. Sentence14: Yes, if Acorn House has free parking, please book my reservation. Question: Who has spoken the sentence 13? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: The bold letters tells me no interest in a guesthouse huh? I ran a search there are two hotels, gonville and university arms. Any preference? Sentence2: I'm afraid our restaurant system is currently down. Can I help you with something else at this time? Sentence3: i'd like the gonville please. make a reservation if you can for thursday for 1 person, 3 nights. Sentence4: Other than the museum previously mentioned, I also suggest checking out the Cambridge University Botanic Gardens on Bateman Street. Sentence5: Ok, I think we've already established the attraction in the town centre. The next thing I need is a HOTEL in the centre that includes free parking. Sentence6: You're welcome. Is there anything else I can assist you with? Sentence7: That's perfect. Thanks so much for your help. Sentence8: Is it true Cambridge has the best attractions? We are looking for something unusual to do in the centre. Sentence9: Thank you for using the Cambridge TownInfo centre. Goodbye. Sentence10: I would like chinese. Sentence11: I'd be happy to help with your request, what area and what type of cuisine are you looking for? Sentence12: Yes can you help me find a place to eat too? Sentence13: No. That is all for now. Sentence14: Booking was successful. Reference number is W0P1SD78 . Anything else I can help you with today? Sentence15: There is teh museum of archeology and anthropology in the centre that is free of charge Sentence16: i would like to go site seeing Question: Who has spoken the sentence 5? (A) User (B) System
Output: Answer: (B) System