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

Example Input: Sentence1: What area would you like to stay in? Sentence2: I need it for 7 people. 5 nights starting Sunday. Sentence3: Which of the 2 hotels should I book for you? Sentence4: Are there any amenities that you are looking for? Parking? Internet? Sentence5: TR2021 is leaving at 20:24 would that work for you? Sentence6: I don't really have a preference for area. But I would like it to be a hotel rather than a guesthouse. And I would love free parking. Sentence7: I'd like free parking. Sentence8: How about the Ashley Hotel? Sentence9: Booking was successful, the total fee is 56.56 GBP payable at the station . Reference number is : EZIAXWCQ . Can I help you with anything else? Sentence10: Great! I'm glad I could be of help. Have a good day. Sentence11: We have ashley hotel and lovell lodge, shall I book you for one of the two? Sentence12: I am also looking for a train departing from stansted airport going to cambridge on sunday. I need to leave after 19:30. Sentence13: I'm looking for a place to stay in Cambridge, moderate price for a hotel. Sentence14: Yes, please make a booking for my group. We'll all be traveling together. Sentence15: Thank you that is all I needed today. Sentence16: Booking was successful. Reference number is L1S8JNAC . Do you need anything else? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: yes that works. I also need a taxi to get between the guest house and restaurant. Sentence2: I'd also like the hotel type and internet status, please. Sentence3: found it, de luca cucina and bar is modern european centre of moderate price range. phone number is 01223356666 code,cb21aw and is located on 83 Regent Street Sentence4: Thank you, I want to book a table for 8 people at 11:30 on saturday. Sentence5: No just need the address and do they have free internet? I am also looking for a nice place to eat called the de luca cucina and bar Sentence6: It is a guesthouse, cheap, wifi and parking. Would you like to reserve it? Sentence7: Worth House has internet and parking. Will that work for you? Sentence8: Ok, a black bmw will pick you up in time to arrive for your reservation at de luca cucina and bar. The taxi's number is 07228077167. Anything else? Sentence9: Found it! It is located in the north and it is cheap. Would you like to make a reservation? Sentence10: Thanks. What was the address for Worth House? Sentence11: warkworth terrace is the address, anything else? Sentence12: Thank you, please contact us again if you'd like additional assistance. Have a great day! Sentence13: I'm looking for a hotel named Worth House Sentence14: That is all thanks for your time. Sentence15: Is that a hotel or guesthouse? And, do they have free internet? Sentence16: I was able to book it the reference number is 3EZLDF7Q . Question: Who has spoken the sentence 8? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I was able to book train TR0677 and you reference number is 6VAA5F0P . Sentence2: I would like a hotel in the north that has free parking. It doesn't need to have internet. Sentence3: Yes. Please choose the first available train and book it for 6 people. Then give me the reference number Sentence4: Hi, I'm looking for a place to stay while I'm in town. Can you assist me? Sentence5: I also need a Wednesday train to Cambridge. Sentence6: Thank you. That is all I need for now. Sentence7: I have found several trains to Cambridge. Where will you be departing from? Sentence8: what kind of place are you looking for? area? Sentence9: Have a wonderful trip. Sentence10: 15 trains match your needs. Do you want to complete a booking? Sentence11: Okay, I recommend the Acorn Guest House. Would you like to book a room? Sentence12: Is there a certain time you are wanting to leave? Sentence13: Actually I am departing from Cambridge and going to Leicester. Sentence14: I need it to arrive by 21:00. Sentence15: Booking for 1 night for 1 person from monday was successful. Your reference number is D3MYG9R0 . Can I assist with anything else, restaurant, attractions? Sentence16: Yes, please book the room and can I have the reference number Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System