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

Q: Sentence1: Thanh binh is a nice restaurant that serves Vietnamese food and is in the cheap price range. Sentence2: That sounds great! May I have their phone number please? Sentence3: Thank you for using the Cambridge restaurant system, please call again. Sentence4: Okay, thank you for your help! Sentence5: How about vietnamese food, please? Sentence6: I am looking for a restaurant that serves Malaysian food and is in the cheap price range. Sentence7: thanh binh's phone number is 01223 362456 Sentence8: No matches found for cheap Malaysian food. Would you like something else? Question: Who has spoken the sentence 1? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: Does it have four stars? Sentence2: Not yet, but can you tell me what time the train arrives in Ely please? Sentence3: acorn guest house is located in 154 chesterton road should i book it for you? Sentence4: I would like to leave on Tuesday after 18:00. Sentence5: It arrives by 20:07! Anything else love? Sentence6: TR5511 leaves Cambridge for Ely at 20.07. Do you need tickets? Sentence7: I've booked your stay at the Acorn Guest House, and your reference number is IT07BRTC . Sentence8: The trip will last 17 minutes. Is there anything else you would like to know? Sentence9: Do you know what day or time you want to leave? Sentence10: Thank you for using Cambridge TownInfo centre. Please consider us for your future travel needs. Sentence11: I need some lodging accommodations. It needs to have free parking and Internet please! Sentence12: I would like someone to book me a place with free parking and internet. Sentence13: That should do it. Thanks so much for your help! Sentence14: I found 29 hotels matching your request. What price range and area of town would you prefer? Sentence15: Thanks a lot. Can you also help me find a train going to Ely? Sentence16: Yes. Please book it for 2 people for 4 nights starting Friday. Sentence17: Yes it does. Shall I book? Sentence18: What is the total travel time on that time? Question: Who has spoken the sentence 15? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: I'm looking for a place to stay. I'd prefer a guesthouse with four stars. Sentence2: We have 11 moderately priced guesthouses that are 4 stars. What area do you want to stay in? Sentence3: The same time. Sentence4: We have several 4 star guesthouses. What side of town are you looking to stay in? Any budget in mind? Sentence5: a and b guest house would meet this criteria. It is located in the east. The phone number is 01223315702. The post code is cb12dp. Will that be all? Sentence6: Yes, that's everything. Thanks for your help! Sentence7: The TR8070 train leaves Leicester for Cambridge on Saturday at 09:09. This is the most appropriate choice for your needs. Would you like me to book it? Sentence8: I have quite a few, when were you planning your stay? Sentence9: If there's nothing else I can do for you, have a great stay. Sentence10: Neither. I am looking for a train departing from Leicester and going to Cambridge that's leaving Saturday after 08:30. Sentence11: Of course, are you looking for a hotel or attraction to visit? Sentence12: Sure, I can do that. Did you want to narrow it to a specific area of town? Sentence13: I'd like a moderately priced place please. Sentence14: No thanks, I was needing the train ID but you already gave that to me. Thanks so much. Sentence15: I am looking for information in Cambridge Sentence16: Area of town doesn't matter. Sentence17: If you could recommend any one of them that would be great. I need the postcode, phone number and the area the hotel is in please. Sentence18: Thanks for using our service! Question: Who has spoken the sentence 3? (A) User (B) System

A:
Answer: (B) System
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