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 sorry, i was unable to find a different hotel that matches your criteria and the availability that you wanted. Sentence2: Good day, thank you for using us, if you need anything else let is know. Sentence3: Yes, I'm looking for an expensive hotel to stay at, can you help me? Sentence4: Is there a specific side of town you'd like to be on? Sentence5: Yes. I would like to stay at University Arms for 2 people, for 2 nights, starting from Friday. Sentence6: Booking was unsuccessful. Would you like to find another hotel? Sentence7: That's too bad. Would you be able to find me a different hotel in the same price range? Sentence8: Are both hotels or are they guest houses? Sentence9: Hold on, I forgot about the Gonville Hotel I mentioned earlier. I got you a room. Your reference number is : B01G0B4W. Can I do anything else? Sentence10: Thats disappointing,thank you andgoodbye. Sentence11: Yes, I would like to stay in the city centre. Also, I would need free parking. Sentence12: That is all. Thank you. Sentence13: You have the Gonville Hotel or the University Arms to choose from. The Gonville is a 3 star hotel while the University Arms is 4 star. Sentence14: They are both hotels. Would you like for me to book one of these hotels for you? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: We have three places that serve international cuisine that you should like. Do you prefer East or Centre? Sentence2: Yes, that would be great. Can you book a table for 4 people at 11:30 on Sunday? Thanks Sentence3: Can you help me find a corsica restaurant? Sentence4: I also need a train that will arrive by 18:15. Sentence5: TR7786 can have you there by 17:51. It costs 23.60 pounds. Sentence6: Sure, which stations are you traveling between? Sentence7: Then can you find me one that serves international food? Sentence8: The Centre is fine. I need a table for brunch on Sunday. Sentence9: I was able to book your party of 4 into Bloomsbury Restaurant on Sunday at 11:30 , Reference: 4ni28yk5 . Can I assist you further today? Sentence10: There is no restaurant serving corsica food in the town. What is another type of food you would like me to search for? Sentence11: What is the travel time? Sentence12: Goodbye, enjoy the rest of your day! Sentence13: The trip takes 51 minutes. Would you like me to book that train for you? Sentence14: I recommend the Bloomsbury Restaurant. It's located at Crowne Plaza Hotel, 20 Downing Street. It's a moderately priced restaurant. Can I book this for you? Sentence15: not now. that is all i needed. have a good day Sentence16: I'll be leaving Cambridge on Monday and I'd like to arrive to London Kings Cross by 18:15. Is there anything available? What time will it leave? Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Yes, it arrives at 05:56. Sentence2: I do not have a specific price or location in mind. Please just send me the address and phone number of an Indian restaurant. Sentence3: Thank you. That is all I needed. Sentence4: There are 22 Indian restaurants in Cambridge. Do you have a preferred price range or area in town you'd like to dine? Sentence5: Are there any later trains? Also I need to get the price, departure time, and train ID when we find a suitable one. Sentence6: The earliest train is at 5:06, do you want me to book it? Sentence7: I need a train to Peterborough on Monday. Sentence8: Okay I have chosen the Curry Prince for you, which is a very popular location. Their address is 451 Newmarket Road Fen Ditton and their telephone number is 01223566388. Sentence9: I am thinking Indian food would be perfect and in the centre. Sentence10: You are welcome. Goodbye. Sentence11: Train TR4765 leaves at 15:06 and arrives at 15:56 and costs 16.50 pounds. How many tickets would you like to book? Sentence12: Yes TR4765 departs cambridge monday at 15:06, arriving in peterborough by 15:56. How many tickets will you need? Sentence13: Yes I have trains that arrive from 5:56 to 15:24. Any preference? Sentence14: I was just looking for information for now. I do need some additional information on a place to eat though. Sentence15: What is the train ID and response of the train that arrives at 15:24? I would like to book that one. Sentence16: Does it arrive by 16:00? Sentence17: I need a train that departs from Cambridge. Does TR4765 go from Cambridge to Peterborough? Sentence18: There are 110 restaurants in the area - are you looking for a specific type of cuisine? Question: Who has spoken the sentence 1? (A) User (B) System
Example Output:
Answer: (B) System