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

[Q]: Sentence1: I'm sorry. I changed my mind. I don't want a guesthouse. Are there any hotels with 2 stars? Sentence2: Great that was all I needed today, thank you. Sentence3: Is there a particular area you would like to stay in? Sentence4: There isn't a guesthouse with 2 stars and free internet available. Is there another type of hotel I can look up for you? Sentence5: Great Glad I could be of help to you. Sentence6: I have you booked in the Ashley hotel. Your reference number is CW6YMT0B . Is there anything else I can do for you today? Sentence7: No, just any 2-star hotel with free wifi will do. Sentence8: Hi, I need a guest house please. Sentence9: Do you have a specific location you want to be? Sentence10: No, but I need free wifi and I would like a 2 star guesthouse please. Sentence11: I have 3 guesthouses all in the moderate price range. Would you like me to choose one for you? Sentence12: I found 3 for you all in the expensive price range. Can you please give me the details so that I may book it for you? Sentence13: Yes, how about a guesthouse with 3 stars and free wifi instead? Sentence14: I would like it for 6 people for 2 nights starting on Wednesday. Question: Who has spoken the sentence 11? (A) User (B) System
[A]: Answer: (B) System

[Q]: Sentence1: i need to know how how much the entrance fee is and the postcode if you may please? Sentence2: Is there anything else I can help you with? Sentence3: It is 8.08 pounds Sentence4: I will be traveling on Saturday and would like to arrive by 17:45. Sentence5: Thank you and goodbye Sentence6: Thank you! Can you also look up Cherry Hinton Hall and Grounds for me? Sentence7: What day and time time will you be travelling? Sentence8: Ok, thank you. Sentence9: Hi, I'll be visiting Cambridge soon, and I need a train from Stansted airport. It should arrive by 17:45. Can you help? Sentence10: No, thank you, that will be all. Sentence11: Yes, that would be perfect! What's the price of one ticket? Sentence12: Sure thing it is in the east of town, what information would you like to know about it? Sentence13: The post code is cb18dw but I do not have the information on the entrance fee. Sentence14: Great, there's a train departing at 16:24 and arriving at 16:52. Will this work? Question: Who has spoken the sentence 6? (A) User (B) System
[A]: Answer: (A) User

[Q]: Sentence1: Your booking was successful and the reference number is 1YYK3KQS . May I assist you with anything else today? Sentence2: Can you make a reservation for 1 on Monday at 17:00 at Peking Restaurant please. Sentence3: Have a good day! Sentence4: How about one that serves Chinese food? Sentence5: No, that's it. Thanks! Sentence6: There are two expensive Chinese restaurants, the Good Luck Chinese Food Takeaway and the Peking Restaurant. Would you like to book a table with either of these? Sentence7: Do the serve mediterranean food? Sentence8: No. I'm the customer and you're the help desk; It is you who are supposed to provide me with the address. But you've given me all I need, so goodbye! Sentence9: There is no expensive Mediterranean restaurant in the south. Sentence10: Do you have any recommendations for a restaurant in the south area in a high price range? Sentence11: Yes, there's the Good Luck Chinese Food Takeaway, Peking Restaurant, and Taj Tandoori. How do those sound? Sentence12: Would you provide me with the address? Sentence13: How about 16:00? Could you please provide me with the reference number also? Sentence14: I'm sorry but there was no availability for that time. Would you like to try another day or time? Question: Who has spoken the sentence 8? (A) User (B) System
[A]:
Answer: (A) User