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 am sorry there is nothing that meets that criteria. Is there another type of food or area you would be interested in? Sentence2: Thanks, will you please book a table for 7 people on thursday at 13:00? Sentence3: I'm looking for a restaurant in the east. Sentence4: How about British food? Sentence5: There are nine restaurants in the east. Do you have a price range in mind? Sentence6: You are welcome. Enjoy your dinner! Sentence7: Booking was unsuccessful. can we book another day or time slot? Sentence8: Nope, that should be everything. Thank you so much for all of your help. Sentence9: Booking was successful for Thursday at 1200hrs , table for 7 at Grafton Hotel restaurant. Your Reference number is KQKTCX5Y . Is there anything else I can help you with? Sentence10: I would recommend you try Grafton Hotel Restaurant. As requested it is in the east and serves British food. Sentence11: I don't have a price range but I am looking for asian oriental cuisine. Is that possible? Sentence12: please try booking at 1200hrs and get me the reference number Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

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: Thanks, that is all I need on the hotel but can I book a train from cambridge to stevenage, I need to arrive by 20:45 and leave at 05:00. Sentence2: I just need the departure time and price please Sentence3: It is called home from home. I was wondering what type of hotel it is and the star of the hotel. Sentence4: I have trains available would you like me to book that for you? Sentence5: I would like to leave on Thursday. Sentence6: I'll be more than happy to help you book the train. What day do you want to leave? Sentence7: Yes, hopefully you can help with some information on a particular hotel? Sentence8: Home from Home is a 4 star, guesthouse type hotel. Sentence9: leave at 5:21 and arrive by 6:10 for 12.80 pounds Sentence10: What hotel are you interested in? Question: Who has spoken the sentence 2? (A) User (B) System
Example Output:
Answer: (A) User