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

Example Input: Sentence1: I'd like to find a train going to Cambridge that leaves on Sunday. Sentence2: Okay. It's a 3-star guesthouse in the north area with no internet or parking. Is there more you would like to hear? Sentence3: I would be leaving from Peterborough. I need to arrive in Cambridge by 19:30 though. Sentence4: My departure time is flexible. Sentence5: The earliest train is TR3782 which leaves at 05:19, would you like me to book some tickets for you? Sentence6: That sounds great. Can I just get the postcode please? Sentence7: No, I believe that is everything. Thank you. Sentence8: I am also looking for a hotel called alpha-milton guest house. Sentence9: Ok, and where are you departing from? Sentence10: No, that won't be necessary. I would like to get the price, though. Sentence11: Not a problem, please contact us again if you need any further assistance. Sentence12: Of course. The price for the train running from peterborough to cambridge on Sunday is 13.20 pounds. Is there anything else I can assist you with? Sentence13: The post code of the alpha-milton guest house is cb41xa. Is there anything else I can assist you with today? Sentence14: Okay, there are a few trains available. What time would you like to depart? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example 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
Example Output: Answer: (B) System

Example Input: Sentence1: Yes, go ahead and book it for 2 nights on Thursday for 3 people. Sentence2: Yes it is an entertainment venue and it is located at cambridge leisure park, clifton way. Their telephone number is 08715501010. Is there anything else you would like to know? Sentence3: Yes. Could you please give me the postcode and entrance fee? Sentence4: No thank you, that is everything I needed. Sentence5: No, is there one with free parking and 4 star? Sentence6: Thank you and enjoy your stay! Sentence7: There is a hotel with 0 stars called cityroomz and a hotel with 2 stars called ashley hotel. They both have free wifi. Do either of these interest you? Sentence8: Yes can you help me find a place to stay? I need a hotel that includes free wifi and has a star of 1. Sentence9: Yes please see if there are any other options. Sentence10: Huntington Marriot hotel, the Cambridge belfry and the university arms hotel all have a 4 star rating, free parking and also include wi-if. Can I book any of those for you today? Sentence11: The postcode is cb17dy and I am sorry but we do not have any information on the entrance fee. Can I help you with anything else? Sentence12: Yes could you please give me information on the attraction called Tenpin? Sentence13: Great! You're booked at the Huntingdon Marriott Hotel with reference number O18FI4L8 . May I help with anything else? Sentence14: There are none showing up under that criteria, shall I look at other options for you? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User