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

Sentence1: Okay, great. Have a safe trip. Goodbye. Sentence2: Yes please. I need it booked for 1 person for 2 nights starting tuesday. Can i get a reference number? Sentence3: I have found the allenbell guesthouse. It meets all of your criteria, is in the cheap price range, and provides internet and parking. Would you like me to book it? Sentence4: Thank you, that is it for today. Goodbye. Sentence5: The reference number for your booking is KEBFTR7I . Can I do anything else for you? Sentence6: I need a place with rated 4 stars in the east. Can you help me find one that like a guesthouse? Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System

Sentence1: So, to clarify, you want a taxi from the University Arms to Bangkok City at 16:00, correct? Sentence2: No, that's all. Thank you. Sentence3: What price range and in what area? Sentence4: What type of hotel is the University Arms? Sentence5: its postcode is cb21ad. is that all? Sentence6: It's a 4 star hotel. In the centre and expensive as you requested. Sentence7: I am looking for an expensive place in the centre area with free wifi? Sentence8: I would like to book a taxi that can commute to both places, It would need to arrive by the booked time. Please provide contact and the car type. Sentence9: Your cuisine options are: British, European, Indian, and Thai. Sentence10: Yes I would like a table for 4 people at 16:00 on Saturday. Sentence11: Reference number is : FJVATJEE . Is there anything else? Sentence12: I'm sorry, make that the centre of town. A Thai restaurant would be fine. Sentence13: Yes, thank you. Sentence14: I found Bangkok City. Would you like me to book a table? Sentence15: Have a nice day. Sentence16: I am looking for something expensive in the west please. Sentence17: I have two options. The Gonville Hotel which has three stars, and the University Arms Hotel which has four stars. Would you like to make a booking? Sentence18: Done! You'll be picked up in a yellow Tesla, and the contact number is 07044662222. Can I help you with anything else? Sentence19: Can you help me locate a place to eat tonight? Sentence20: No thank you. What is the University Arms Hotel's postcode? Question: Who has spoken the sentence 17? (A) User (B) System
Answer: (B) System

Sentence1: their address is unit su43, grande arcade, saint andrews street, cb23bj. phone number is 01223307402. anythin else? Sentence2: Yes, are you wanting any particular type of food? Sentence3: I have made those reservations. Your reference number is F9G08K4X . Sentence4: That is everything thank you. Sentence5: I have 11 museums in that area. The castle galleries is one of my favorites. Would you like more information? Sentence6: I am looking for a restaurant near the centre, moderate priced, please. Sentence7: I would like british food please. Sentence8: Yes. May I have the number and address? Sentence9: That sounds great. Can you book a table for 8 people on Friday at 13:30? Sentence10: You're welcome, Have a great day. Sentence11: How about the restaurant one seven that serves British food and is in the moderate price range? Sentence12: I am looking for places to go in town. The attraction should be in the type of museum and should be in the same area as the restaurant Question: Who has spoken the sentence 8? (A) User (B) System
Answer: (A) User