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

Q: Sentence1: Yes, see if 15:00 is available. Sentence2: I am sorry, I was unable to reserve a table for that time on Saturday, would you like to try a different time slot? Sentence3: I need a guesthouse in the cheap price range. Sentence4: Yes, I am also looking for a restaurant called The Nirala. Sentence5: Do any of these hotels have 4 stars? Sentence6: Booking was a success! Sentence7: Any area is fine, but I'd like to book rooms for 8 people. We'll be staying 5 nights, beginning on Saturday. Can any of them accommodate that? Sentence8: I have many results for a cheap guesthouse, would you like to narrow it down to stay in a particular area of the town? Sentence9: Glad that I could be of service. Goodbye! Sentence10: I'd like to book a table there for 8 at 16:00 on Saturday, please. Sentence11: I was able to get you rooms at the Alexander Bed & Breakfast. Reference number is : HREOM15W . Can I be of further assistance today? Sentence12: The nirala serves indian food in the north side of town. It is located at 7 Milton Road Chesterton, phone 01223360966. Is there anything else I can help with? Sentence13: Could you please provide the reference number? Sentence14: Great - that's all I need today. Thanks for your help! Sentence15: Sure thing. The reference number is Z1YHIR0Y . Sentence16: Yes, in fact 7 of the 9 hotels in your search criteria have 4 stars. Would you like to narrow your search by area? Question: Who has spoken the sentence 4? (A) User (B) System

A: Answer: (A) User
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Q: Sentence1: I am also looking for Cambridge Contemporary Art. Sentence2: Can you give me their entrance fee and phone number? Sentence3: Maybe. What is the star rating and price range on that hotel? Sentence4: Are there any available rooms in the Autumn House? Sentence5: You're welcome. Enjoy your stay. Sentence6: You are all set. Your taxi would be a red lexus and you can contact them at 07614169632. Is there anything else I can help? Sentence7: no problem. Their phone number is 01223324222 and the entrance fee is free. Sentence8: Sure, I have found it for you. Is there anything you want to know about? Sentence9: That's all i need. Thank you so much for the help! Sentence10: Autumn house has a guesthouse. When are you looking to stay? Sentence11: it has four stars and its cheap Sentence12: Awesome. Can you also help me to book a taxi from the hotel to the attraction? I want to leave the hotel by 24:45. Question: Who has spoken the sentence 5? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: The phone number is 01223334200 and the address is saint andrew's street. Sentence2: The emmanuel college is free and it is on saint andrew's street. How does that sound? Sentence3: That sounds great!! Can I have their address, and how much is the entrance fee? Sentence4: I am looking for places to go in the centre of town. Can you help? Sentence5: Yes, I also need a place to stay. Are there any 4 star hotel in the north with free parking? Sentence6: Nope, I'm all set. Thank you! Sentence7: The price doesn't matter as long as it's a 4 star hotel. Sentence8: thanks for all your help! Sentence9: I would recommend acorn guest house. Would you like a reservation? Sentence10: In the centre would be perfect! Sentence11: You're Welcome! Enjoy your stay! Goodbye. Sentence12: Do you have a price range preference? Sentence13: Is there a college I could visit? Sentence14: Is there anything else I can do for you today? Sentence15: There are lots of places to visit in the city centre. What type of place would you like to visit? Sentence16: It is located at saint andrew's street and it's free! Anything else? Sentence17: No, but can I have the phone number and the address? Sentence18: In what area would you prefer it to be? Question: Who has spoken the sentence 5? (A) User (B) System

A:
Answer: (B) System
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