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

Sentence1: The area doesn't matter. I would like free wifi though, if possible. Sentence2: Not really, how about 4 star? Sentence3: Do they also have free parking? Sentence4: I have many options. Do you have a preference for the area you would like to stay in. Sentence5: There are several moderate 4-star places to stay throughout town, but they are all guesthouses. Would a guesthouse work for you? Sentence6: acorn guest house does have free parking,would you like that one? Sentence7: Dojo Noodle Bar is a nice cn I book you a table ? Sentence8: I'm looking for a moderately priced, 1-star place to stay. Sentence9: No, I don't need a hotel booking at this time. I'd like to find a place to dine on Sunday. Sentence10: Unfortunately we do not have any moderately priced 1 star hotels in Cambridge. I'm sorry! Cityroomz has 0 stars in the centre, does that work? Sentence11: Would you like me to reserve the acorn guest house for you? Sentence12: Yes. I also need to find a place to dine that is in the center and the same price range as the hotel. Question: Who has spoken the sentence 9? (A) User (B) System
Answer: (B) System

Sentence1: You're welcome. Goodbye! Sentence2: Sure! Can you book a table for 8 people at 17:30 on Friday? Sentence3: Thank you. That's all I need right now. Bye. Sentence4: No. Choose one for me. Sentence5: There are a total of 14 different expensive Indian restaurants located throughout the city. Is there a particular area of town you would like to eat in? Sentence6: I'd like you to tell me about great Indian restaurants in the area. It's okay if they are expensive. Sentence7: Curry garden has good reviews, would you like to book there? Sentence8: Sure. Your reference number is QLMRQ3H2 . Anything else? Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User

Sentence1: Perfect, thank you. Can you recommend a Mediterranean restaurant in the centre of town? Sentence2: The kirkwood house is a guesthouse in the moderate price range. Their address is 172 chesterton road, post code cb41da. Sentence3: Thank you have a nice day. Sentence4: Gardenia is fine. Can I get the postcode and price range? Sentence5: I'd like to get the address, hotel type, and price range please! Sentence6: There are 3 mediterranean restaurants in the centre. The Gardenia had good food and is cheap, while the other to are in the highest price range. Sentence7: I'm looking for the hotel called Kirkwood House. Sentence8: What specific information are you looking for? Sentence9: Thank you for finding the Gardenia for me, that is all I need today. Sentence10: The Gardenia is in the cheap price range and is located in postcode cb23ll. Question: Who has spoken the sentence 4? (A) User (B) System

Answer: (A) User