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 having difficulty booking either of the. Can you find another day or time that would suit you? Sentence2: Absolutely. Can I suggest the Warkworth House at a moderate price range, or the Autumn House at a cheap price range. Do either of these interest you? Sentence3: OK, you're all booked for 3 nights at the Warkworth House, starting Thursday. Your reference number is AC1NVW47 . Can I help with anything else today? Sentence4: I would consider both. I need to book for three people and 5 nights starting on Thursday. Can either of them offer that? Sentence5: There are 6 possible places that fit your request. Would you like more information or to add additional search preferences? Sentence6: Good Afternoon, I am looking for a place to stay on the east side in a guest house Sentence7: Can you see if any of them offer free parking? Sentence8: You're welcome. Goodbye! Sentence9: I really need to stay during that time frame. Would you mind checking again? Sentence10: No, that will be all. Thanks! Sentence11: Honestly, any price range will do. Can you suggest one for me and help me with booking a room? Sentence12: 5 of the guesthouses offer parking. What is your price range preference? Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Alright. Enjoy your stay in Cambridge! Sentence2: Thank you. Have a great day. Sentence3: The train that arrives closest to 16:45 is best. I just need to know what time it leaves and arrives. Oh and of course it's ID. Sentence4: Yes. I am looking for a place to go in the west part of town. With preference to college. Sentence5: There are 6 days that arrive before 16:45 on this day. Did you have any other preferences? Sentence6: I am looking for information in Cambridge. I need a train ticket. Can you help? Sentence7: In the west part of town Clare College. The entrance fee is 2.50 pounds. Sentence8: Great that's all the information I need! Sentence9: Certainly. What is your departure location and your arrival location? Sentence10: It has been my pleasure. Feel free to contact us with any other questions you may have in the future. Sentence11: I would like to depart from London Liverpool Street and arrive in Cambridge. I would like to leave Sunday and arrive by 16:45? Sentence12: Of course! That will be TR6578 leaving at 13:39 and arriving at 15:07. The price is 13.28 pounds and it's an 88 minute duration. May I help with anything else? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: That sounds great! Could you give me the arrival time, travel time, and train ID as well? Sentence2: Okay, that's great! Thank you very much! That's all I needed. Sentence3: Sure. It's train TR8265, arrives at 10:43 in Cambridge and has a duration of 49 minutes. Can I book you seat? Sentence4: There are many expensive restaurants in the city. Do you have an area or type of cuisine that you'd prefer? Sentence5: I would recommend bedouin, address is 100 Mill Road City Centre,phone is 01223367660 and post code is cb12bd. Sentence6: No, that would be all. Thanks. Bye. Sentence7: Hey there, I need a train from stevenage that leaves after 09:45. Can you help? Sentence8: Alright, thanks for using Cambridge TownInfo centre! Have a great day! Sentence9: Maybe later. I am also looking for an expensive restaurant. Sentence10: We are going to cambridge and would like to leave on monday after 09:45. Thanks for your help. Sentence11: I would be happy to help with your request, what is your destination and what day will you be leaving? Sentence12: Is there anything else I can help you with today? Sentence13: Would a train departing at 09:54 work for you? Sentence14: No, I'll take your recommendation. I do need postcode, address and phone number, please. Question: Who has spoken the sentence 13? (A) User (B) System
Example Output:
Answer: (B) System