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

[EX Q]: Sentence1: Yes, that sounds like a good choice. Can you book it for me for 3 people starting Saturday? Thanks Sentence2: I was able to book the hotel for you. The reference number is BTTS9GYC . Is there anything else I can help you with today? Sentence3: There are eight accomodations of the hotel type with free parking. What part of town do you prefer? Sentence4: I need a train from norwich to get to the hotel by 16:30. Sentence5: The Cambridge Belfry is an inexpensive, 4 star option on the west side with free wifi and free parking. Sentence6: The west, please. And can I get free wifi? Sentence7: Okay I have a train tat gets to Cambridge at 15:35. Would you like me to book that for you? Sentence8: It doesn't really matter, just need to get there by 16:30. Sentence9: I want a place to stay. Find me a hotel that includes free parking. Sentence10: I have several available. When do you want to leave? Sentence11: I would like to stay for 3 nights. Sentence12: Sure, I can do that. How many nights would you like it for? Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Price doesn't matter. Do they have free parking? Sentence2: I need an expensive restaurant in west Cambridge. Sentence3: No I just need the reference number for the reservation for 3 people on Sunday at 16:15. Sentence4: Give me the address and phone number for the one you most recommend Sentence5: There are 33 options for lodging in town. Do you have a preference for area, price range, type, or star rating? Sentence6: No I am good! I do not need a taxi. Sentence7: Yes, both the establishments offer free internet as well. Sentence8: Do they have free wifi also? Sentence9: I would like a place to stay Sentence10: There are two places that meet your search criteria. Did you have a price range in mind? Sentence11: I have 5 restaurants that match what you're looking for. Would you like to try Tandoori Palace? Its located at 68 Histon Road Chesteron. Sentence12: No I believe we have got everything done. Goodbye. Sentence13: Do they offer free parking? Sentence14: I want Indian food. Sentence15: In terms of type, I want a hotel. And I'd like 4 stars and wifi as well, with a location in the south Sentence16: Happy to help. Have a great day. Sentence17: Yes, they do offer free parking. Can I book a room for you? Sentence18: We have several to choose from. Did you have a specific cuisine in mind? Sentence19: Sure. The reference number is CBAGG03S and your table will be reserved for 15 minutes. Is there anything else today? Sentence20: No thank you. I have all the info I need. Sentence21: Rosa's Bed and Breakfast is the one I recommend. It's address is 53 Roseford Road and it's phone number is 01223512596 Sentence22: Yes as a matter of fact they do. Sentence23: Will you need a taxi to get to tandoori palace? I can help with that. Sentence24: Can I help you with anything else today? Sentence25: I will book that for you. Would you like the phone number in case you change your mind? Sentence26: Sure, can I get a reservation for Sunday at 16:15? I will need a table for 3. Question: Who has spoken the sentence 16? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I'd like to find hotels in the cheap price range that offer free wifi. Sentence2: There is one hotel that matches your search. It is the cambridge belfry in the west area. Can I book that for you? Sentence3: There are 2 choices - would you prefer indian or Italian food? Sentence4: No thank you, just the address and phone number please. Sentence5: Thanks. I am also looking for a place to eat in the north. Same price range as my hotel. Sentence6: da vinci pizzeria serves italian food it is in the north of town Sentence7: I would prefer italian. Sentence8: OK, I will need to make a reservation for the same group of people at 12:45 on that same day. Sentence9: It was my pleasure, enjoy the rest of your day. Sentence10: Can you book it for me. 3 people, 4 nights, Sunday. Reference number, please. Sentence11: Great. Thank you for your help. Sentence12: You're all set. Your Reference number is : 7J5INWLY . Can I assist you with anything else? Sentence13: They are located on back lane, cambourne. Is there anything else I can help you with? Sentence14: Booking was successful.Reference number is : 1CU5LU5X . is there anything else i can help? Question: Who has spoken the sentence 4? (A) User (B) System
[EX A]:
Answer: (A) User