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

Q: Sentence1: No, that's all I needed. Thank you for your help - goodbye! Sentence2: I will take the one that arrives at 15:08. can you make me a booking for 8 people on Wednesday? I will need a reference number. Sentence3: The train should depart from Cambridge on Wednesday and headed for Stansted Airport. It should arrive by 15:15. I would also like you to make a booking for 6 people. Sentence4: I'm looking for a train. Sentence5: I have two trains that would suit you. One arrives at 14:08 and the other at 15:08. Do you have a preference? Sentence6: I have 2,828 trains with different routes, to help narrow it down, where will you be departing/arriving, and what day/time? Sentence7: It was a pleasure to assist you. Please use us again for your future needs. Have a good day. Sentence8: Sure thing! I've booked the train for 8, and your reference number is I62H3VUY . Is there anything else I can do for you today? Question: Who has spoken the sentence 1? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: Great. I was finally able to get you into the Autumn House staring Friday for 3 nights and 3 people. your booking reference is C5ARPTZ2 . Sentence2: Sorry about the confusion earlier. I was able to book your room at Leverton House for Friday, 3 nights for 3 people. The reference number is U5B3PHWC . Sentence3: It was my pleasure. Goodbye! Sentence4: Can you try 3 nights instead? Sentence5: Perfect. I would like to book it for 3 people for 4 nights starting on Friday. Sentence6: Awesome. Thank you for everything! Sentence7: I can help you with a taxi. Please tell me your departure and destination sites along with your time frame. Sentence8: Yes let's try a different hotel. Sentence9: How about Cambridge Contemporary Art, on 6 Trinity St? Entrance is free. Sentence10: The Leverton House is a guesthouse located on the east side of Cambridge. What information are looking for? Sentence11: Both of them are booked solid for the days you requested. Would you like a hotel in a moderate price? Sentence12: I'd like to visit a museum if possible. Sentence13: Can they accommodate 3 people for 4 nights? Also, what are their phone numbers? Sentence14: I'm sorry. I am unable to book your stay. Could you arrive on another day or stay for a shorter amount of time? Sentence15: I'm sorry, it doesn't look like the Leverton House will be able to accommodate you. How about Allenbell or Autumn House? They are in the same area and also inexpensive. Sentence16: Can you please check for 3 nights at the same hotel for 3 people and can I have the reference number? Sentence17: I'm sorry both of those hotels are booked solid. Would you consider slightly more expensive accommodations? Sentence18: Okay. I'll need a taxi too. Sentence19: I want to leave the hotel by 22:00 to go to the Museum you mentioned. Sentence20: I'm looking for places to go in the centre of town. Sentence21: I'm also going to need a taxi, please. Sentence22: Sure. But I still need to book a hotel. Is there anything else available? Sentence23: Do you have the phone number for Autumn House's front desk? Sentence24: There are many attractions in the centre of town. Could you be more specific about what you're looking for? Sentence25: I'm looking for information on the Leverton House hotel. Sentence26: Sure. It's 01223575122. Anything else? Sentence27: They don't have a room available for 3 nights either. Anything else you'd like me to try? Sentence28: A black skoda will pick up up at Leverton House at 22:00 and bring you to Cambridge Contemporary Art Museum. The contact number is 07697068185. Question: Who has spoken the sentence 15? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: Okay, booked it and your ref. is TJGHMT3I . Sentence2: Thanks, that's all I needed today. Goodbye! Sentence3: Certainly. Will you be departing from Cambridge? What time would you like to leave after or arrive by? There are departures every hour from 5:01 through 23:01. Sentence4: Yes can you please for three at 17:00. Sentence5: I recommend Jinling Noodle Bar. It's located at 11 Peas Hill City Center. Would you like me to book a table for you? Sentence6: Thank you. Let me know if there is anything else I can assist you with. Sentence7: I would like a suggestion of a moderately priced Chinese place. Sentence8: The next train after 15:45 leaves at 17:01 from Cambridge. Would you like to book this train? Sentence9: I want to find a Chinese restaurant in the centre of Cambridge. Sentence10: I would like to leave Cambridge after 15:45. Sentence11: Can you book it for me and get a reference number ? Sentence12: There are 10 choices and we have cheap, moderate and expensive options, any preference? Sentence13: 2 please and I need a ref. number. Sentence14: What day would you like to dine on ? Sentence15: I want a reservation for 2 people at 17:30 on thursday. Sorry, I don't know why I said the other thing before that. I must be going crazy. Sentence16: Your table was booked. Your reference number is 42XEDGDF . Is there anything else I can help you with? Sentence17: Yes, please book it and provide the reference number. Sentence18: I also need a Friday train to Broxbourne. Sentence19: On what day would you like your reservation? Sentence20: How many train tickets would you like to book? Question: Who has spoken the sentence 10? (A) User (B) System

A:
Answer: (A) User
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