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

[EX Q]: 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
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes. Book for 2 people for 4 nights on thursday and I'll need the reference number too please Sentence2: Okay, great! Enjoy your day. Sentence3: I have your table for 2 booked at the Bedouin. Would you like anything else? Sentence4: Your booking was successful. Your reference number is Q5BKFIC3 Sentence5: The reference number is 0LG9G1BT . Is there anything else I can help you with? Sentence6: We have one restaurant, the Bedouin. Would you like me to make you a reservation? Sentence7: I need the reference number too please. Sentence8: 2 people for Thursday at 19:00 please Sentence9: I was unable to find anything matching that. Would you like to try again? Sentence10: How about African food in general? Sentence11: yes please. Sentence12: The Limehouse is a moderately priced guesthouse on the north side of Cambridge. They are a 4-star establishment and offer free parking and Internet. Would you like to make a reservation? Sentence13: Thank you. Can you find us some good eats, too? We'd like something moderately priced that serves South African cuisine. Sentence14: I would be happy to book a reservation for 2. What day are you looking at and time? Sentence15: I am looking for a hotel in the Cambridge area called the limehouse. Sentence16: Thank you that is all I need. Question: Who has spoken the sentence 14? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Thank you goodbye. Sentence2: thank you and good bye Sentence3: Saigon City's address is 169 High Street Chesterton Chesterton and its phone number is 01223 356555 Sentence4: Saigon City serves asian oriental and they are located in the north, although they are quite expensive. Would you like the address? Sentence5: I would like a restaurant in the north part of town that serves australasian food Sentence6: There are no restaurants matching your criteria. Would you like to search for something else? Sentence7: How about asian oriental food? Sentence8: Yes, I would like their address and phone number. Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]:
Answer: (A) User