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

Example Input: Sentence1: That was a successful booking, your reference number is T6C83P46 . Sentence2: Thank you so much! Sentence3: Not really. Anything would be fine. Sentence4: Yes, please. I'd like to book it for 6 people and 5 nights starting from monday. Sentence5: I'm not too concerned with location, but I would like it to include internet and have a 4 star rating please. Sentence6: Do you have a preferred location or price range? Sentence7: Yes, how about 3 nights? Sentence8: I recommend the Acorn Guest House. Would you like a room there? Sentence9: I'm looking for a guesthouse with free parking. Sentence10: Booking unsuccessful. Want to try for a shorter stay? Sentence11: There are 16 guesthouses that meet those requirements. Any preference on price range? Sentence12: You're so welcome. Thank you. Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: What is the address and postcode? Sentence2: That's all I need. Thanks, good bye. Sentence3: The address is Parkside, Cambridge and the postcode is CB11JG. Sentence4: The telephone number for the Parkside Police is 01223358966. Sentence5: Glad I could be of service. Sentence6: I'm looking for a the Parkside police station. Question: Who has spoken the sentence 2? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: The address to riverboat georgina is cambridge passenger cruisers, jubilee house and the postcode is cb43ax. Can I help with anything else? Sentence2: I am looking for places to go in the north area. Sentence3: I have a boat, park or 2 swimming pools in that area. Is there one you would like to try? Sentence4: For how many do you need this reservation? Sentence5: I'm looking for a place to eat that is in the same area. I want it to be cheap. Sentence6: You're welcome. Enjoy the rest of your day! Goodbye. Sentence7: Your table is reserved at DaVinci, ref# 6U1JO0B2 . Is there anything else I can do for you today? Sentence8: Da Vinci Pizzeria sounds good. Thanks. Sentence9: You've got 2 choices in the north for cheap places to eat: Royal Spice serves Indian food, and Da Vinci Pizzeria serves Italian food. Which would you prefer? Sentence10: I also need a taxi that will get me to the restaurant in time for the booking you just made. Sentence11: Excellent, I have booked you a taxi, a yellow skoda, and the contact number is 07262084765. Is there anything else I can help with? Sentence12: I need to book a table for 8 at 18:30 on Monday, please. Sentence13: No, I think this is all I need for today. Thank you for your help today. Sentence14: Give me more information about the boat please. Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System