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

Example Input: Sentence1: No thank you. I do need help finding places to go in town. I'm looking for entertainment in the centre of town. Sentence2: The Alexander bed and breakfast is located in the centre. The phone number is 01223525725. Sentence3: Okay! Just to clarify, from where will you be departing? Sentence4: the address is 56 saint barnabas road Sentence5: what's their address? Sentence6: There are several available. Do you have a preference on if there is a fee or free? Sentence7: I dont see any entertainment in the center of town. Could I try a different area for you? Sentence8: I'd like to stay in a good part of town. Can you please give me the phone number? Sentence9: Okay, how about 2 stars? It does need to include free parking. Sentence10: Great! I have booked a taxi for you. The car will be a yellow audi, and the contact number is 07663388074. Can I help with anything else? Sentence11: ashley hotel is a nice 2 star hotel. Sentence12: Okay, christ's college is free admission. Sentence13: How about a college instead? Sentence14: There are actually no 1-star accommodations anywhere in Cambridge. Sentence15: It is a guesthouse. Want me to book it? Sentence16: Free would be preferable. I also need a taxi. Sentence17: I need a place to stay in Cambridge. It should be either a hotel or guesthouse with 1 star and moderate price range. Can you help me with that? Sentence18: What hotel type is that? Sentence19: I would also like to book a taxi to and from the hotel that leaves by 13:30. Sentence20: I am so sorry. I don't know where my head has been. I need to leave the hotel by 13:30, going to Christ's College. Sentence21: At 4 stars you have many options. What part of town would you like to stay in? Sentence22: you have been of great help thank you Sentence23: How about a hotel with 4 stars instead? Sentence24: I am glad. thanks you too. Question: Who has spoken the sentence 23? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: i have booked that for you. your reference number is xhrx4ig7 . Sentence2: I'm confused. Should I look for a restaurant? Sentence3: Will you be leaving from Cambridge. Sentence4: That is helpful.Thanks Sentence5: Yes that will work. I need to book it for 2 people. Sentence6: yes i will be leaving from Cambridge. Sentence7: I would like to leave after 10:30. Sentence8: Okay the booking was successful. The reference number is HZ6B38TH . Sentence9: I'm also looking for a train. I'll be traveling back to Broxbourne on Friday. Sentence10: TR7372 leaves Cambridge at 11:01 and arrives at broxbourne by 12:01, would that train work for you? Sentence11: Yes please. It'll be for 4 nights. Sentence12: In order to book, can you tell me the number of guests, number of nights and the day of the week you want to start your stay? Sentence13: No, I'm sorry. That's all for now. Thank you for all your help. Sentence14: To be clear do you need me to fine you a place to eat? Sentence15: I would like to find out information about a hotel called Warkworth House. Sentence16: Can you find me a expensive cafe to eat at once i get off the train? Sentence17: I need to book it to 2 people for 4 nights starting from wednesday. Sentence18: Warkworth house is a guesthouse in the east area. It is moderate pricing with 4 stars. It offers free parking and internet. Would you like a reservation? Sentence19: What time would you like to leave around? Sentence20: I actually don't need a place to eat. Thank you, that is all. Sentence21: Thank you for using this service good bye Sentence22: What type of food would you like? Sentence23: Thank you. Can I get a reference number for the booking? Sentence24: I will go ahead and book your room. Question: Who has spoken the sentence 8? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Sorry, actually, can you please just send me their phone number? Sentence2: How about visiting one of our many architecturally important churches? May I offer you a list? Sentence3: I need to find places to go. Can you aid me? Sentence4: Thank you for contacting us and have a nice day. Sentence5: I wouldn't know this. Sentence6: Thanks, i'm also looking for a place to stay with free parking. Sentence7: I recommend the allenbell. It's a cheap guesthouse that is located in the east like your attraction is. It has free parking and wifi. Shall I book for you? Sentence8: I'd like you to book the allenbell. Before I do can you tell me how far is it from the theater? Sentence9: I need a hotel or guesthouse with 4 stars that has free wifi, can you make a recommendation based on that? Sentence10: I had no preference going into this, but lets try east since the museum is there. Sentence11: Thank you so much for your help. That is all that I need today. Sentence12: There are 4 museums there. The cambridge artworks, gallery at twelve a high street, and saint barnabas press gallery are all free. The cambridge museum of technology is 5 pounds. Sentence13: No but quality matters, are any of them 4 stars? Sentence14: I'd like a guesthouse, 4 stars. Area doesn't really matter. Can you recommend anything? Sentence15: There are about 6 places you can choose. Are you wanting a specific price range? Sentence16: I can book that for you but need to know how many people, when and how many nights. Sentence17: there are 16 available. the one that is a beautiful place and is really inexpensive is the limehouse guesthouse. do you need a room? Sentence18: How about a museum Sentence19: There are a couple museums, some entertainment venues, and a boat. Do any of these interest you? Sentence20: No booking, just get me the phone number. Sentence21: There are 10 different entries for that area. Are you looking for something specific? Sentence22: What attractions are in the East ? Sentence23: The Cambridge Artworks sounds good. Can I get the address and phone number please? Sentence24: Yes there are five hotels in the area that are 4 star hotels. Would you like me to list them for you? Sentence25: No problem at all. The phone number for Allenbell is 01223210353. Sentence26: I should very much like to explore the East, what is located there? Sentence27: The cambridge artworks is at 5 greens road, cb13ef. The number there is 01223902168. Sentence28: What area of town would you like to stay in? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output:
Answer: (B) System