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

Example Input: Sentence1: Don't worry, I should be able to help you. Do you know which station you'll be leaving from or going to? Sentence2: What is your destination? Sentence3: Hi, I am trying to plan a trip and need some help with a train. I'm not familiar with trains at all unfortunately. Sentence4: I'm departing from leicester and I need to leave on friday. Thank you for helping! Sentence5: I also need a place to stay. Sentence6: 11 pm and I want it for three people Sentence7: I'm going to Cambridge. Sentence8: We have many great places to stay. What area would you like and do you have a price range? Sentence9: Is there a time you would like to arrive by? Sentence10: TR6539 will arrive by 22:54. Booking was successful, the total fee is 113.4 GBP payable at the station. Your reference number is IE5RK2IG . Do you need anything else? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: You're welcome. Can I help you with anything else? Sentence2: That is all. Thanks Sentence3: The post code is CB11JG. Sentence4: Thank you, what's the post code? Sentence5: Thank you for your help Sentence6: Cambridge, parkside police telephone number 01223358966. Sentence7: I need to get to the nearest police station, can you assist me? Sentence8: Okay. Have a good day and thanks for using our system. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Old Schools is on Trinity Lane, and their phone number is 01223332320. Can I help with anything else today? Sentence2: Thank you for the help! Have a nice day. Sentence3: There are a lot of attractions to see in the centre, from architecture, colleges, and museums. What kind of attractions are you looking for? Sentence4: I would like to book that for 8 people please. Can i get the reference number? Sentence5: There are a quite a few trains that leave from kings lynn. Did you want to leave on a certain day? Or arrive by a certain time? Sentence6: I'll visit anything. I don't much care the type. Sentence7: The train should leave on monday and should go to cambridge. I don't care about the arrival time. Sentence8: The TR0684 which leaves at 11:11 would work well for you. Want me to book that? Sentence9: Hi, I am looking for attractions in the centre of town. Do you have any recommendations? Sentence10: Ok. What is the address and phone number for old schools? Sentence11: How about Old Schools? It's an architecture attraction that's free. Sentence12: You have a great day too! Don't forget, when you're in a bind, call the Cambridge TownInfo centre! Sentence13: I also need a train to leave after 10:45 from kings lynn Sentence14: All booked! The reference number is M50TGTUW . Question: Who has spoken the sentence 11? (A) User (B) System
Example Output:
Answer: (B) System