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

Example Input: Sentence1: I don't need a ticket just yet. Can you tell me the total cost per ticket, though? Sentence2: I need it to go to cambridge and should depart from leicester. Sentence3: I want to find a hotel to stay at that has free wifi and is moderately priced. Can you help? Sentence4: There are 3 guesthouses that meet your needs. 2 of them have free parking along with the Internet, and one does not. Carolina Bed and Breakfast is very nice. Sentence5: Is there a particular area of town that you prefer? Sentence6: I hope to. Thanks again. Bye. Sentence7: Enjoy your trip. Sentence8: Im getting the info up now, what date and time? Sentence9: I'd like to arrive by 13:45 on sunday. Sentence10: The TR8285 arrives by 12:54. Would you like me to book this one? Sentence11: Have a nice day. Sentence12: Yes, I'd like to be on the east side. The hotel should have a 4 star rating please. Sentence13: Ok, Carolina B&B it is. Can you book me a room for 1 person staying 5 nights on Sunday please? Sentence14: Yes I also need a train. Can you help me? Sentence15: Your booking was successful and your reference number is BCT54NA8 . May I help you with anything else today? Sentence16: That will be all for the day, thank you. Sentence17: All available tickets cost 30.24 pounds each. What else can I do for you? Sentence18: Definitely. When were you wanting to travel? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Could you tell me more about it? What is its price range? Where is it located in the south? Sentence2: I'm sorry that date and time slot is already full. Would you like to try a different date/time? Sentence3: It is expensive and the address is 15-17 norman way, coldhams business park Sentence4: what about 4:30 on tuesday? Sentence5: There is one Mexican restaurant in the south. The Chiquito Restaurant Bar. Would you like me to book it for you? Sentence6: Thank you, that is all I need today. Sentence7: I am trying to find a restaurant in the south of the city that serves modern American food. Sentence8: I was able to book a table for 1 at 16:30. Your reference number is P62404I5 . Sentence9: I didn't find any modern American restaurants in the south end. Are you open to other areas? Sentence10: Sounds delicious, could you book a table for 1 at 17:30 on Tuesday? Sentence11: You are welcome. Goodbye. Sentence12: What about a restaurant there that serves mexican food? Sentence13: It is in the expensive price range and is located at 2G Cambridge Leisure Park Cherry Hinton Road Cherry Hinton cb17dy Sentence14: Great! Can you also tell me the address and price range for the Express by Holiday Inn Cambridge? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: You're booked at Ashley Hotel! Your reference number is SPSKXM90 . Sentence2: You're very welcome. Please contact us again, if we can be of further service. Sentence3: I want to commute between the hotel and restaurant. I need to be at the restaurant by the booked time,12:45. Sentence4: Thank you! I also need a taxi to get to the restaurant. Sentence5: I also need a hotel that has free parking and wifi. Sentence6: You are all booked at Hakka, located on Milton Road in Chesterton. Great place. Your reference number is 76N3GIHO and the table will be held for 15 minutes. Sentence7: Sure! Do you have a time preference? Sentence8: Were you looking for a hotel with a guesthouse? Sentence9: yes please, for 6 people starting thurs. for 2 nights, I need the confirmation # too please Sentence10: Is it a guesthouse or a hotel? Sentence11: Ok! I booked that for you! Your car will be a red volvo. The contact number is 07919056928. Is there anything else I can do for you? Sentence12: No, that should be all. Thank you. Sentence13: Ashley hotel offers parking and wifi and is within moderate pricing range. Would you like me to book a room for you? Sentence14: I'm here to help! There are 2 expensive restaurants and 1 moderate price. Do you have a preference? Sentence15: I have 2 hotels that are available. Would you like to book one? Sentence16: I need to book for 6 people, 2 nights, starting on thursday. Sentence17: I need to find a Chinese food restaurant to dine at located in the north. Can you help? Sentence18: Nah, just book me a table at your favorite! I need it at 12:45 on Thursday. Table for 6, please. Question: Who has spoken the sentence 6? (A) User (B) System
Example Output:
Answer: (A) User