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

[Q]: Sentence1: i want some mexican food. Sentence2: Dojo Noodle Bar serves asian oriental food and is located in the centre of town. The price range is cheap. Sentence3: The phone number for dojo noodle bar is 01223 363471. Would you like any other information? Sentence4: I don't care. Sentence5: You're welcome. Goodbye. Sentence6: We have four Asian oriental restaurants in centre. What price range do you prefer? Sentence7: What is the phone number? Sentence8: No, thank you, that's all I need. Thank you and goodbye! Sentence9: The only listing for Mexican food is Chiquito Restaurant Bar. How else may I assist you? Sentence10: I want a restaurant in the centre and serves asian oriental food? What is the phone number? Question: Who has spoken the sentence 9? (A) User (B) System
[A]: Answer: (B) System


[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


[Q]: Sentence1: Thank you for contacting Cambridge TownInfo Centre. Enjoy your trip! Sentence2: What would you like to know? Sentence3: Hi, I'm looking for a theatre in town. Sentence4: How about trying the booking for 2 nights instead? Sentence5: I have several theatres in town; most are in the center and there's one on the south side. Do you have a preference? Sentence6: Thank you. That's all I needed today. Sentence7: That's all, I also need some info on the aylesbray lodge guest house. Sentence8: The booking was successful. Your reference number is VEKFOWW6 . May I help you with anything else today? Sentence9: I just need to book it for 5 people for 3 nights starting wednesday. Sentence10: I want to leave the hotel by 23:45, please. I will need the contact number and car type as well. Sentence11: Not particularly. Which do you recommend? If you can provide an address, and info on entrance fees for your favorite, that would be great, thanks. Sentence12: Booking was unsuccessful. Can I book it for another day or for a shorter stay? Sentence13: There is a nice theatre in the centre called Mumford Theatre at Anglia Ruskin Enterprise, East Road. There are no entrance fee's listed. Would you like the phone number? Sentence14: Certainly. When do you want to leave by? Thanks. Sentence15: I also need a taxi that will get me from the hotel to the Mumford Theatre. Sentence16: Look for a red skoda at 23:45. Contact number is 07203451236 Question: Who has spoken the sentence 8? (A) User (B) System
[A]:
Answer: (A) User