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 would like a four star hotel, and I don't need free parking. Sentence2: Certainly, there are 44 attraction in the town centre, do you have a type of attraction you would like to visit? Sentence3: I don't have any in particular. What would be the highest rated attraction in that area? Sentence4: There are 32 hotels with free wifi, do you have any other things you require in a hotel? Sentence5: I am looking for places to go in the centre. Sentence6: Sounds great. Can I book 8 people for 2 nights starting Tuesday? Sentence7: there are a total of 79 attractions in Centre what type of attraction that you are looking for? Sentence8: No. That's all I needed. Thanks! Sentence9: Are there any museums available? Sentence10: Could you recommend me a hotel that is cheap? Sentence11: I would recommend the Acorn Guesthouse which is 4 stars, moderately prices and offers both free wifi and parking. Sentence12: I am looking for a hotel with free wifi. Sentence13: That sounds great. Can I get the postcode for Castle Galleries? Sentence14: Hmm, let me see...I think maybe a moderately priced 4 star hotel might be better. Do you show any availabe? Sentence15: Yes the postcode is cb23bj. Is there anything else I can help you with? Sentence16: I don't have rating information, but Castle Galleries in nice, and admission is free. Would that interest you? Sentence17: Great. Thank you for contacting Cambridge Towninfo Centre. Have a great day. Sentence18: How about a and b guest house, unless you have any other specifics. Sentence19: You are all booked at the Acorn Guest House. Your reference number is LXMFRZLR . Do you need assistance with anything else? Sentence20: How about the autumn house? It has 4 stars, is in the cheap price range and has internet. Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Yes, how about a museum in the centre? Sentence2: What is their address? Sentence3: I want a cheap restaurant that serves polynesian food. Sentence4: How about italian? Sentence5: I need it to arrive at the restaurant by the booked time. Sentence6: You are booked and your reservation number is Q7YR4YLN Sentence7: Looking now La Raza has a few openings, how many people? Do you have a date and time in mind? Sentence8: The castle galleries is a free museum in that area. Sentence9: I am afraid I have none matching your request. Would you like to try another type of food or area? Sentence10: Hi, I'm looking for entertainment attractions that are available in the centre. Sentence11: Can you help me get a taxi? Sentence12: There are no entertainment attraction located in the centre. Would you like me to check different areas? Sentence13: Of course. I need the time of travel, departure location and the destination. Sentence14: great, i have 69 options for you in that area! Sentence15: The la raza serves spanish food. Its cheap and in the centre. Would you like me to book you a table there? Sentence16: Your taxi is a blue skoda under the contact number 07244814493. Is there anything else? Sentence17: Can you try spanish food instead? Sentence18: You're welcome, glad I could help. Sentence19: Yes! Please do. Sentence20: I'd like it for Saturday at 17:45, just one person. Sentence21: That is all thanks. Sentence22: I am also looking for a restaurant in the same area as the attraction. Sentence23: There's nothing that serves spanish food in the cheap price range in the centre of town? Sentence24: unit su43, grande arcade, saint andrews street anything else i can help you with? Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: It really needs to depart from Norwich so I can arrive by 13:15 Sentence2: I was able to book that. The reference number is BY848B54 . 88 GBP is payable at the station. Sentence3: You are welcome. Goodbye. Sentence4: I'll take 5 tickets on the 11:16, please. Any may I have the reference number? Sentence5: Certainly, you can leave Norwich Wednesday at 10:16 and arrive by 11:35, or leave at 11:16 and arrive by 12:35. Which would you like? Sentence6: TR5725 From London kings cross to Cambridge Wednesday leaving at 05:17. Does that work for you? Sentence7: Nah, I'm not picky. Surprise me. I will need a phone number, address, and postcode, though. Sentence8: There are fifteen cheap locations in the centre of town, do you know what kind of food you're looking for? Sentence9: Alright, lets give Zizzi Cambridge a shot, their phone number is 01223365599, their postcode is cb21ab, and their address is 47-53 Regent Street. Sentence10: Great thank you I think I have all I need Sentence11: I am looking for a train going to Cambridge leaving on Wednesday. Sentence12: Thanks! I'm also looking for a place to dine in the center that's cheap. Question: Who has spoken the sentence 8? (A) User (B) System
Example Output:
Answer: (A) User