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

[EX Q]: Sentence1: Kymmoy is a great Asian Oriental place in the center of town, but it's expensive. Sentence2: Is there a Oriental restaurant in the City Centre that is in the expensive price range? Sentence3: I have 2 matches. Do you have a type preference? Sentence4: Thanks. I'm also wanting to see if there's someplace to get polynesian food in the centre of town. Sentence5: That's all I will need. Thank you! Sentence6: Where is it located? Sentence7: Please help me find a hotel to stay at in the centre that has a 4 star rating. Thanks! Sentence8: Thank you for using the Cambridge TownInfo centre. Please have a pleasant day. Sentence9: There are no Polynesian restaurants in the centre. Sentence10: I want an expensive place with free wifi. Sentence11: Its location is on Regent Street. Sentence12: That narrows it down to one choice, the University Arms Hotel. It meets all of your requirements, plus has parking. Would you like me to check availability? Question: Who has spoken the sentence 10? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: No thank you, goodbye. Sentence2: I'm sorry, there are no Korean restaurants in the north part of town. Can I help you find anything else? Sentence3: Thank you for using our system. Good bye Sentence4: How about any area? Sentence5: I would like a restaurant in the north part of town that serves korean food Sentence6: What is the address and price range? Sentence7: Little Seoul is at 108 Regent Street City Centre and is an expensive restaurant. Do you want the phone number? Sentence8: little seoul is in the centre and serves korean food Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: I don't have a price range in mind. Can you recommend just one restaurant matching my criteria? Sentence2: I am starving! Sentence3: That sounds great. Can you just give me the postcode? Sentence4: Wonderful. That's all I need! Sentence5: Kohinoor is a cheap restaurant. Sentence6: There are a few of those. What price point are you looking for? Sentence7: One more thing, what's the price range? Sentence8: Great. Have a wonderful evening! Sentence9: The postcode for Kohinoor is cb12as. Is there anything else I can help you with today? Sentence10: What would you like to eat? Sentence11: Indian food in the centre, please. Sentence12: How about Kohinoor? It's a cheap Indian restaurant in the center. Would you like a reservation? Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]:
Answer: (A) User