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

[EX 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
[EX A]: Answer: (B) System

[EX Q]: Sentence1: kohinoor. i want to book a table for 2 people at 16:45 on Thursday Sentence2: Nope, I'm all finished for today. Thanks so much, goodbye now! Sentence3: Sure. Booking was successful. The table will be reserved for 15 minutes. Reference number is : X9AVZ8EI . Can I help with anything else today? Sentence4: Absolutely. What is the name of the restaraunt you are interested in? Sentence5: You are very welcome, bye! Sentence6: I need to find some information in a particular restaurant. Are you able to look up a specific place? Sentence7: I also need a Thursday train. Sentence8: Depart from Ely and would like to arrive by 13:00 in Cambridge. I need to book it for 2 people I also need a reference number. Thanks Sentence9: What location will you depart from and where are you headed? Sentence10: Sure thing, it's booked and your reference number is PWSVK4XQ . Do you need more help? Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: There are 3 hotels with a 2 star rating. Two in the North and one in the East. Would you like more information on one of them? Sentence2: You're very welcome. Will that be all? Sentence3: How many people will be traveling? Sentence4: The address at express by holiday inn cambridge is 15-17 norman way, coldhams business park. Their postcode is cb13lh. Anything else I can do for you? Sentence5: I would like the east please. Sentence6: i also need a taxi to commute between the two places Sentence7: It is. Would you like a room? Sentence8: I'm looking for some info on an attraction called king's college. Sentence9: I need to leave the attraction by 03:00. Sentence10: That will be all, thank you. Sentence11: Kings college is free and located in the centre of town. Sentence12: Is it in the expensive price range? Sentence13: I have the express by holiday inn cambridge. Would you like me to book that for you? Sentence14: Thank you for contacting us and have a nice day. Sentence15: I would like to find a place to stay with a 2 star rating and free parking. Sentence16: Excellent. Thank you for your assistance! Sentence17: OK, I have a blue audi coming to get you at King's college at 03:00 to take you back to the express by holiday inn cambridge. Is there anything else? Sentence18: Not at this time but what is their address and postcode? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]:
Answer: (B) System