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

Example Input: Sentence1: There are lots of local attractions, are you interested in architecture? Sentence2: No thank you. That will be everything I need today. You have a nice day. Sentence3: You're welcome! Have a nice day. Goodbye. Sentence4: I have confirmed a taxi picking you up at backstreet bistro at 24:45. The contact number is 07972785913. A blue volkswagen will pick you up. Can I help with anything else? Sentence5: Yes sure as long as the attraction is in the city center. Could you also provide me with the phone number and postcode of the attraction? Sentence6: Sure. I also need somewhere to eat. I'm thinking something on the expensive side and close to the college. Sentence7: Backstreet bistro is located in town centre. The address is 2 Sturton Street City Centre, phone 01223306306. Do you need any further assistance? Sentence8: Can I get one in the centre of town and looking for gastropub food. Sentence9: Of course. How about Saint Catharine's College, in postcode cb21rl? Phone is 01223338300. Sentence10: Backstreet Bistro is an expensive restaurant in the centre of town that serves gastropub food. Would you like more information or to make a reservation? Sentence11: Alright, there are 33 different restaurants around the college that are expensive. Is there a type of food you are looking for? Sentence12: Hi, I'm planning a trip to Cambridge and would like a few ideas on places to go for fun. Sentence13: Information, please! I'm not looking to make a booking at the moment. Sentence14: Yes, can you book a taxi between the two? I would like to leave the restaurant by 24:45. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Was there anything you were specifically interested in? For example there are museums and nightclubs. Sentence2: Sorry, actually I need an expensive restaurant as well. Sentence3: thanks that is all i needed for today Sentence4: I am looking for something to do later in the centre of town. Sentence5: Thank you, that is all. Sentence6: Do you have a specific one in mind? Sentence7: Emmanuel Colleges number is 01223334200, and it is located on Saint Andrew's Street. Do you have any other questions? Sentence8: Okay what type of food would you like to eat and in what area please? Sentence9: There are five expensive european restaurants in Cambridge. I suggest eraina, which is also in the centre. Sentence10: I want to try european food wherever it may be. Sentence11: You're welcome! Have a great time! Sentence12: I would like to go to a college in the centre of town. Sentence13: Great. Thanks for letting us assist you today! Sentence14: No, any one will be find. Will you pick one for me and send me the address information and phone number? Question: Who has spoken the sentence 8? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Hi, I I'm looking for a hotel to stay at that is moderately priced and includes free wifi. Sentence2: Yes. I do need the booking number and would also like to check into a train. Sentence3: Where would you like to depart from? Sentence4: There will be 4 people for 2 nights starting Monday. Sentence5: Is there another hotel that has a room available for 4 people for 2 nights starting on Monday? Sentence6: Your booking request was successful!, Would you like the reference number? Or is there anything else I can help with? Sentence7: If you have no other preferences to help narrow it down, may I suggest the Acorn guest house? It's very nice, with free wifi and free parking as well. Sentence8: I'm sorry, but the hotel isn't available for your stated days. Would you like to try another day or a shorter stay? Sentence9: There are no rooms available for 2 nights starting on Monday. How about a different day or a shorter period? Sentence10: That is perfect. Please book 3 days starting on Sunday. Sentence11: What is the travel time for the train? Sentence12: You said Sunday at first and they you just said Monday. Do you want it for Sunday or Monday? Sentence13: Okay, how about for 1 night? Sentence14: I only need one ticket. Thank you. Sentence15: You're welcome! Have a great day! Sentence16: We have 11 such entries. Does free parking matter to you? Sentence17: Absolutely. How many tickets would you like to get? Sentence18: I am not sure but I do want it to have a 4 star rating. Sentence19: I'd like to go from Broxbourne to Cambridge on Monday. Sentence20: Hi, we have several trains leaving on monday. Is there a particular time of day, you'd like to leave? Sentence21: I have 17 different options. In order to narrow down an option for you, can you tell me what area you would prefer? Sentence22: The train leaves at 13:32 and arrives 14:32 for a travel time of 60 minutes. Is there anything else you need? Sentence23: That's all. Thanks! Goodbye! Sentence24: I would like to leave after 12:30 Sentence25: Yes, please, and can I have a confirmation number as well? Sentence26: Okay and how many guests will be included in the reservation? Sentence27: I have several trains running that day, the earliest I can offer that leaves after 12:30 is TR3108 which leaves at 13:32 and arrives by 14:32, would you like me to book your tickets? Sentence28: Not really, but free parking could be nice. Sentence29: Sorry. Monday is what I want. Sentence30: I have booked your ticket for one, is there anything else you need? Question: Who has spoken the sentence 12? (A) User (B) System
Example Output:
Answer: (A) User