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

Example Input: Sentence1: We have many hotels that fit your needs, is there a specific area you're looking at? Sentence2: We have TR2475 that leaves cambridge at 07:50 and arrives ely by 08:07. Will that work for you? Sentence3: It's in the north area and they do have parking. Sentence4: Thanks, that's all i need! Sentence5: Are you sure you don't need me to book your hotel for you? Sentence6: Do they have free parking? What area is it located? Sentence7: Acorn guest house fits your needs. Would you like me to book your stay? Sentence8: something that has free wifi Sentence9: I need to find a guesthouse with a moderate price range. Any places to stay? Sentence10: That has been booked. Reference number is : FSUGM4NQ . Sentence11: Can you help with transit information? I need to go to ely by train on Sunday and need to arrive by 09:00 departing cambridge. Sentence12: Yes, that sounds perfect. Can you purchase 7 tickets for me please? Sentence13: Excellent. I also need a train to ely. Sentence14: No problem. Good bye! Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Okay that is all I needed. Sentence2: Can you help me find a hospital close by for an injury I have? Sentence3: The address is Hills Rd, Cambridge and Postcode is CB20QQ. Sentence4: I have information for Addenbrookes Hospital at Hills Rd, Cambridge. If you have a certain department you would like to contact, I can get that number for you. Sentence5: Okay. Glad I could be of help. Sentence6: I just need the adress and the postcode if you have it. Question: Who has spoken the sentence 1? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: I would like to be in the centre. Sentence2: Can you help me find a really nice and expensive chinese place in town? Sentence3: The phone number for All Saints Church is 01223452587. Can I help you with anything else? Sentence4: How about all saints church? It has free admission. Sentence5: I'd like to go between All Saints Church and Tang Chinese by 2:30. Sentence6: Sure. The postcode is cb58bs. Can I help you with anything else? Sentence7: Booking completed! Booked car type : red skoda Contact number : 07139106461 Sentence8: thanks thatnis it for today Sentence9: Can you tell me their postcode as well? Sentence10: How about tang chinese? They are located at Napier Street City Centre. Sentence11: Any luck with the taxi yet? Sentence12: Sounds interesting. What is their phone number? Sentence13: i want information about attractions in the centre Sentence14: I can help you with that. Where would you like the taxi to pick you up? Sentence15: Okay, no problem! I hope you have a great visit! Sentence16: Can you tell me their phone number? Sentence17: Let me find a taxi for you. Sentence18: I also want to book a taxi to commute between the two places. Sentence19: Okay! What area of town would you like to dine in? Sentence20: Sure thing, here you go 01223357187 Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System