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'm looking for a train that departs cambridge on saturday. Any ideas? Sentence2: I would like to leave after 16:30 and would like to go to kings lynn. Sentence3: Yes please and I'll also need the postcode. Sentence4: I am not showing any hotels with 1 star that have free parking, would you like to look for something else? Sentence5: We have three 4 star hotels that provide free internet and free parking. Is there an area you would prefer to stay at? Sentence6: the postcode is cb236bw. it is a hotel in the cheap price range. when would you like to stay from, how many people, and for how long? Sentence7: Alright, are there any 1 star hotels that offer free parking? Sentence8: There are 202 trains that leave Cambridge on Saturday. Sentence9: I recommend The Cambridge Belfry, a cheap 4-star hotel on the west side. Would you like to reserve a room? Sentence10: I'm interested in the earliest one. What is the train ID? Sentence11: Sorry, no, I do not see any one star hotels with free wifi. Would you like to try another option? Sentence12: That's the TR2840. Sentence13: That was all I needed. Thank you. Sentence14: Are there any with 4 stars? Sentence15: There are 7 trips that would work. The earliest leaves at 17:11 and the latest leaves at 23:11. The train ride will be 47 minutes. What would you prefer? Sentence16: The cambridge belfry is a hotel, not a guesthouse. May I help with something else? Sentence17: Does any of them have free wifi? Sentence18: You're welcome! Have a great day. Sentence19: I need the postcode, hotel type, and price range for The Cambridge Belfry. Sentence20: I need more information on the number of nights and people. Sentence21: Any place is fine, I go with whatever you recommend. Sentence22: Forget about booking it, just please tell me what type of hotel it is. Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Sorry about that, i'm leaving from norwich. Sentence2: Brookshite? Can you please repeat that? Sentence3: You are more than welcome! Sentence4: Ok. I can help you find a train. Where will you be departing from? Sentence5: ive boked that for you trainID departure destination day leaveAt arriveBy price duration book (optional) TR9900 norwich cambridge friday 05:16 06:35 17.60 pounds 79 minutes Sentence6: Thank you for your help Sentence7: I will be leaving from Brookshite. Sentence8: You're all set! The reference number is 44LHUSZT . Sentence9: I'm looking for a train going to cambridge. Sentence10: Yes please book that and I need the reference number. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I will be traveling to Cambridge and I'm excited about seeing local tourist attractions. Sentence2: I'd like a taxi please. It should pick me up at 15:30 from The Byard Art and drop me off at the hotel. Sentence3: Thats it, thanks so much! Sentence4: Your booking was successful. Your reference number is S56D4VON . Can I assist you further today? Sentence5: The area is flexible. But I am looking for something with a 3-star rating that offers free wifi. Sentence6: Sure. I need rooms for 7 people for three nights starting Thursday. Sentence7: Great! There are many wonderful tourist attractions in Cambridge. Is there a particular type of attraction you are looking for? Sentence8: Not in particular. Please recommend one and provide the area and entrance free. Sentence9: Glad to be of service. Sentence10: I would like to visit a museum. What do you suggest? Sentence11: There are 23 museums. Is there a part of town you are interested in? Sentence12: I have 5 hotels that meet those specifications. Do you have a area in town in mind? Sentence13: Thanks! I would also like to find an expensive hotel. Sentence14: The Byard Art museum is free and is in the South. Sentence15: Gonville Hotel is a 3-star hotel that offers free wifi. It is located in the centre area. Would you like me to book that for you? Sentence16: A blue Lexus will come to pick you up. Their number is 07670314554. What else do you need? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System