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 can book you at the university arms hotel. It has a 4 star rating, free parking and wifi. Does this interest you? Sentence2: What will be the first day you will stay and how long will you be staying? Sentence3: I'm sorry but you'll have to book another day or a shorter stay. When would you like to stay? Sentence4: Yes. That would be great. Sentence5: Awesome, thanks! I think that takes care of everything I needed. Sentence6: Booking completed! Please look out for a Grey BMW, their contact number is 07130839627. Is there anything else I can help with? Sentence7: Certainly. I have many available. Is there a particular area you are looking in? I have several in the west and centre. Sentence8: Can you see if they have just 1 night available? Sentence9: I want to stay for 5 nights starting on Tuesday. Sentence10: Corpus christi is 2 pounds, which is in centre. Sentence11: Can you give me the entrance fee for one of the colleges in the centre? Sentence12: Okay great please enjoy your stay and don't hesitate to call us back if you need anything else. Sentence13: I am traveling to Cambridge and excited about seeing location attractions. Could you help me find a place to go, like a college? Sentence14: I need a taxi please between the 2 places. I want to leave the attraction by 2:30. Sentence15: Your booking was successful with a reference number of S1HTVV32 . Is there anything else I can do for you today? Sentence16: I'm also looking for a hotel in the centre. I don't want to stay in a guesthouse. It needs to be a hotel. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: How about TR9382? Sentence2: I would like to leave on Sunday. Sentence3: I think that'll work. I need to reserve two seats, can you help me with that? Sentence4: Booking was successful, the total fee is 7.04 GBP payable at the station. Reference number is : 6NJA0V8R . Sentence5: You're very welcome. Have a great day. Sentence6: Well I need to leave after 14:45, so if it is after that time that'll work. Sentence7: Thank you. That's all I need for now! Sentence8: Hi. I'm looking for a train from ely to cambridge, if there is one. Sentence9: TR9823 will leave at 15:35, how does that sound? Sentence10: Okay, what day do you want to leave? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I do not have that information, but they can be reached at 01223866800. Sentence2: Thank you, that's all I need today. Sentence3: Yes please, could you advise on the price per night for the room? Sentence4: Can you please book a room there for 2 people starting on Wednesday for 4 nights? Sentence5: OK I have booked you a room for 4 days beginning Wednesday. Your reference number is YKUIEGTJ . Is there anything else I may assist you with? Sentence6: The Express by Holiday Inn Cambridge is an expensive 2-star hotel on the east side of Cambridge. It offers free wifi and free parking. Would you like more information? Sentence7: I would like information about the Express by Holiday Inn in Cambridge, please. Sentence8: I have three trains that match your criteria, how many tickets do you need? Sentence9: I just need one.I also would like to know the cost, arrival time and ID of the train. Sentence10: My pleasure. Enjoy your trip! Sentence11: Yes I need a train on Sunday after 19:00 from Cambridge to London Liverpool Street. Sentence12: A ticket on TR9732 costs 13.28 pounds and will arrive at 21:27. Question: Who has spoken the sentence 1? (A) User (B) System
Example Output:
Answer: (B) System