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

[Q]: Sentence1: It is in the centre part of town. Sentence2: That's all. Thank you, goodbye! Sentence3: What is its phone number? Sentence4: Okay, thanks. And what area is it in please? Sentence5: Michaelhouse Cafe is at St. Michael's Church Trinity Street City Centre. How does that sound? Sentence6: I am looking for a restaurant in the expensive price range that serves Belgian food. Sentence7: The phone number is 01223 309147. Sentence8: I have nothing available meeting your request, would you like to try a different price range or another type of cuisine? Sentence9: What is the address of the restaurant? Sentence10: Yes, is there any expensive European eateries? Sentence11: That's good, thanks. Sentence12: Would you like anything else? Sentence13: Yes, there are 4 expensive restaurants serving european food. Which area would you like? Sentence14: your welcome. thanks for calling Question: Who has spoken the sentence 1? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: Yes, can I get a table for 4 on saturday at 15:15? Sentence2: Hi! Can you help me find a particular restaurant? Sentence3: unfortunately they are filled up for that time would you like me to reserve another time or would you like to choose another restaurant. Sentence4: Of course, there are 110 restaurants in town. Would you like me to search by restaurant name? Sentence5: The Varsity Restaurant serves international food in the center of town. Do you want me to book it for you? Sentence6: Excellent. I'll need the reference number. Sentence7: Yes, I am looking for the Varsity Restaurant. Sentence8: Yes, I will book a table for 4 on Saturday at 15:15. Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User


[Q]: Sentence1: Sure , their number is 07328080907. What else can I help you with today? Sentence2: The Gardenia is a cheap Mediterranean restaurant. Would you like me to make reservations there for you? Sentence3: No problem, enjoy the rest of your day. Sentence4: I'm looking for something cheap, I'm on a budget. Sentence5: There are 13 colleges in the centre. Gonville and Caius college is fascinating and it is free. Does this appeal to you? Sentence6: I can help you with that. What time do you want to leave the college and arrive at the gardenia? Sentence7: I need to find a place to visit while in town. What attractions are in Centre? Sentence8: Thanks. Can I get the taxi company's contact phone number please? Sentence9: There are a lot! We have some impressive architecture, historic colleges, theatres, and more. What sort of thing appeals to you? Sentence10: You got it! The Gardenia is located at 2 Rose Crescent City Centre, cb23ll. The phone number is 01223356354. What else can I do for you? Sentence11: That's all I needed. Thank you. Sentence12: I want to leave at least by 14:45 if that is okay. Sentence13: Is it free? I also am looking for a Mediterranean restaurant in the same area. Sentence14: Yes the college entrance is free. I also found 3 restaurants with mediterranean cuisine in the same area. two are in the centre. can you give a price range? Sentence15: Sounds good. Can I get the address with the postcode for that one, please? Sentence16: I'd like to see a college, please. Sentence17: That is fine, I've got you booked with a white Tesla. Sentence18: Yes, the college is located on trinity street, postcode cb21ta. Is there anything else I can help you with today? Sentence19: I also need to book a taxi from the College to the restaurant. Sentence20: No I will take care of that. Please provide the phone number, address, and postcode for the restaurant Question: Who has spoken the sentence 3? (A) User (B) System
[A]:
Answer: (B) System