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

Ex Input:
Sentence1: No, surprise me. I will need the address and the area, though. Sentence2: I'll need one from leicester to cambridge on saturday, leaving after 16:30 Sentence3: No thanks, that will be all. Sentence4: Is there anything else I can help you with today? Sentence5: I don't need a reservation, I just need the address and the area. Sentence6: Alright. Thanks for using our service and have a nice day. Goodbye. Sentence7: It is the centre area and its address is Free School Lane City Centre Sentence8: Good afternoon! I'd like to visit an expensive european restaurant. Will you help me find one? Sentence9: Okay. Thank you. Sentence10: The train arrives at 18:54 and costs 30.24 pounds. Sentence11: Eraina is a very nice restaurant in the centre. How many in your party? And what day and time should I make your reservation for? Sentence12: What time does it arrive and the price? Sentence13: Where would you like to depart and arrive? Sentence14: Yes there are 5 restaurants that meet your requirements. Do you have a part of town or type of food you prefer? Sentence15: Great,I also need information on getting a train. Sentence16: I have a train for you that leaves at 17:09. Would you like me to book it? Question: Who has spoken the sentence 14? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: You're welcome, glad I could help. Sentence2: I personally like Parkside Pools. It's in the center of town, on Gonville Place. Sentence3: Any area is fine. Which of the 4 swimming pools do you suggest? Sentence4: It is cb11ly. Is there anything else I can help you with? Sentence5: Where will you be departing from? Sentence6: Thanks. That was all I needed. Goodbye. Sentence7: I am departing from Cambridge. Sentence8: I am looking for information on places to go in Cambridge. Can you help with that? Sentence9: My destination is london kings cross Sentence10: Can I get the postcode as well? Sentence11: I can help with that. Is there a particular area you're interested in? Sentence12: Yes, there are 4 swimming pools that match those requirements. Is there a particular area you would like to go to? Sentence13: There are 278 trains that meet that criteria. Would you like to narrow down your options by departure site, destination, or arrival time? Sentence14: I have made that reservation and your reference number is 1702SDBO . Sentence15: TR1502 arrives in london kings cross friday at 11:51. Would you like me to book you any seats? Sentence16: I also need a train leaving after 11:00 on friday Sentence17: What I'd really like is to find a swimmingpool. Sentence18: Yes book for 8 people and I need a reference number Question: Who has spoken the sentence 13? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: A hotel is fine whichever you recommend. Sentence2: what area of town could you love to stay? Sentence3: Seventeen locations meet your criteria. Would you prefer a guesthouse or a hotel? Sentence4: I see Ashley Hotel in the North that is a 2 star hotel has free wifi would you like me to book that hotel for you? Sentence5: Glad to assist, enjoy the rest of your day. Sentence6: Yes, please for 3 people on Monday. Sentence7: Thank you for your help! Sentence8: lovely, how many nights will you be staying? Sentence9: Christ's college is located at saint andrew's street and the postcode is cb23bu Sentence10: I need to stay for 2 nights with 3 people from Monday. Sentence11: Hey, I need a moderately priced place to stay. Sentence12: I was able to book your room for 3 people for 2 nights starting Monday. The Reference number is : 5GESSI5X . Sentence13: Thank you, I'm also looking for some places to go in town. Something along the lines of college, I also need the address and postcode. Sentence14: The area doesn't matter, but I do need free wifi. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User