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

[EX Q]: Sentence1: That was a successful booking, your reference number is T6C83P46 . Sentence2: Thank you so much! Sentence3: Not really. Anything would be fine. Sentence4: Yes, please. I'd like to book it for 6 people and 5 nights starting from monday. Sentence5: I'm not too concerned with location, but I would like it to include internet and have a 4 star rating please. Sentence6: Do you have a preferred location or price range? Sentence7: Yes, how about 3 nights? Sentence8: I recommend the Acorn Guest House. Would you like a room there? Sentence9: I'm looking for a guesthouse with free parking. Sentence10: Booking unsuccessful. Want to try for a shorter stay? Sentence11: There are 16 guesthouses that meet those requirements. Any preference on price range? Sentence12: You're so welcome. Thank you. Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Perfect, I have train TR1472 that meets your criteria, would you like me to book a ticket for you? Sentence2: I can help you with that. Where are you traveling from? Sentence3: Book it for 3 people. Sentence4: Sure. Your train is booked. The fee will be 30.29 GBP and your reference number is 7FGDRE1Q . Sentence5: I need to find a place to stay as well. Can you help? Sentence6: I need to find a train into Cambridge that will arrive by 09:15. Sentence7: I will be leaving the Stansted Airport on Thursday. Sentence8: I need to know what you're looking for first. Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: THe train booking is for the same day as my dinner reservation correct? Sentence2: Loch fyne is a great seafood place. I have booked a table for you and your reservation number is NDSUGZK9 . Anything else? Sentence3: I would like to be in Cambridge by 08:00 Sentence4: I can help you with that. First, I need to confirm that the destination is Cambridge, and can you provide the desired timeframe for travel? Sentence5: The price is 18.88 pounds. Is there anything else I can help you with? Sentence6: Sure thing! There is the Loch Fyne restaurant in that area that you may enjoy. Would you like more information? Sentence7: Feel free to get in touch if you need anything else. Enjoy your evening. Sentence8: No thank you. What is the price for that train? Sentence9: No thanks. I may be back in touch though! Sentence10: Thank you, good bye Sentence11: Is there any other restaurant that you could try for me before I call myself? Sentence12: They seem to be booked solid for the next week, which is all I can book for. Their phone number is 01223362433, if you would like to call for a reservation. Sentence13: Yes of course. Anything else? Sentence14: What day will you be wanting to dine? Sentence15: I need to find a train leaving london kings cross on Saturday as well. Sentence16: Is there a different cuisine you would be willing to try? Asian or Italian maybe? Sentence17: I'm looking for a seafood restaurant in the centre. Sentence18: As long as the seafood restaurant is in the centre I am fine with 18:00 and I need the reference number. I need a train arriving at Cambridge by 08:00. Sentence19: I'm dining on Saturday. Sentence20: That sounds great. Can you book me a table there for 3 people? Sentence21: Goodbye. Thanks for using Cambridge TownInfo centre. Sentence22: I have found train TR2687, it will depart at 05:17 at arrive by 06:08. Would you like me to book this for you? Question: Who has spoken the sentence 3? (A) User (B) System
[EX A]:
Answer: (B) System