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

Sentence1: Not really. Would you see if the highest rated, least expensive guesthouse has rooms for 5 nights for 6 people, beginning Wednesday? Sentence2: I would like to stay in a guesthouse that is in the south. Sentence3: I was able to book Rosa's Bed and Breakfast for you for 5 nights for 6 people starting on Wednesday. The reference number is RTITW2L5 . Sentence4: I am traveling to London Liverpool Street from Cambridge. Sentence5: There are 10 trains that meet your criteria. Do you have a preferred time that you would like to arrive by? Sentence6: Of course! The best option is the TR7092 leaving at 17:59 with a duration of 88 minutes. The price is 16.60 pounds. How else may I assist you? Sentence7: Yes, I was wondering if you could assist me in finding a train for Monday. Sentence8: There are 2828 trains available Monday. Where are you traveling to? Sentence9: I have found 29 hotels that fit your criteria for parking. What price range are you looking for? Sentence10: There are three guesthouses in the south with free parking in the moderate and cheap price ranges. Do you have a star or price range preference? Sentence11: I'd like to find somewhere to stay with free parking; I'm planning to rent a car during my stay. Sentence12: It was my pleasure to help. You have a great day. Goodbye. Sentence13: Thank you. I believe that is everything I need today. Sentence14: Yes, I need to leave after 17:30, please. I don't need tickets right now, I'll just need the price, travel time, and train ID. Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User

Sentence1: I'm also looking for a restaurant in the centre of town that serves chinese food. Sentence2: I need to leave bishops stortford. Do you have a train going out? Sentence3: The Ugly Duckling sounds interesting! What's their address? Sentence4: I'd like to go to Cambridge and would be leaving on Thursday after 16:30. What is available then? Sentence5: Fantastic, have a great day! Sentence6: They are 10.10 pounds each Sentence7: I have 4 choice for you. The Ugly Duckling, Tang Chinese, HK Fusion, and the Sesame Restaurant and Bar. Does one of these sound like something you would like to try? Sentence8: No thank you. That is all. Sentence9: The Ugly Duckling is located at 12 St. Johns Street City Centre. Their postcode is cb21tw. Is there anything more I can help with? Sentence10: There's a train that leaves at 17:29 and arrives by 18:07. Does that sound okay? Sentence11: I am sure I do, where would you like to go? Sentence12: Yes, that would work. What is the price of a ticket? Sentence13: There are several Chinese restaurants in the centre of town. What price rnge are you looking for? Sentence14: I prefer something expensive. Question: Who has spoken the sentence 13? (A) User (B) System
Answer: (B) System

Sentence1: clare hall is in the west and the postcode is cb3al. Can I help with anything else? Sentence2: You're welcome, have a great day. Sentence3: Yes, could I also have their phone number please? Sentence4: Can you help me find a college to visit? Sentence5: Location is not important for me Sentence6: pick for me and I would need the area and postcode Sentence7: We have a lot of indian places in cambridge. Do you have a preference for price range or location? Sentence8: A white volvo car will pick you up at clare hall at 24:45 and the contact number is 07113259690. May i further assist you today? Sentence9: no thanks , that is all for today Sentence10: Does location matter? Sentence11: no reservation please, I also want to book a taxi to commute between the two places. Sentence12: Curry prince is a moderately priced Indian restaurant. Address 451 Newmarket Road Fen Ditton. Sentence13: Please tell about your departure and destination sites. Sentence14: I would like a moderately priced one on the east side. Sentence15: Their post code is cb58jj. Is there in any other information your needed? Sentence16: The phone number is 01223566388. Would you like me to make a reservation? Sentence17: I need to leave clare hall by 24:45 going to curry prince. I also need the contact number and car type please. Sentence18: what their postcode? Sentence19: I have 18 that match. Do you have any other preferences? Sentence20: Actually, yes. I am really in the mood for good indian food. Could you help me find somewhere new to try? Question: Who has spoken the sentence 6? (A) User (B) System

Answer: (A) User