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

Ex Input:
Sentence1: Sure. Please book for 4 nights starting on the same day. Sentence2: Perfect, thank you! I'm also looking for a guesthouse in the area, preferably in the North. Do you have an option that has free parking? Sentence3: I will go ahead and book that for you. Sentence4: Yes, please. I need 2 tickets. Sentence5: I was able to get 2 tickets. Your total is 28.64 GBP and will be payable at the station. Your reference number is 8UDKCNBU . Sentence6: You're welcome, it was a pleasure serving you! Sentence7: I am leaving from Broxbourne. Sentence8: There are 19 trains running from Broxbourne to Cambridge on Sunday. Is there a particular time when you need to travel? Sentence9: Booking was successful. Your reference number is : I78WB6O9 . Can I help you with anything else today? Sentence10: I'm sorry, how many people would you like to book the room for? Sentence11: I have just the train for you! TR9331 will arrive in Cambridge at 17:32, which is within your desired timeframe. Would you like me to book that for you? Sentence12: We have many in that area with free parking. Might I suggest the acorn guest house? Sentence13: From where are you departing? Sentence14: Can you get me one that'll arrive by 18:30? Sentence15: 2 people, 4 nights, for sunday. Sentence16: I'd like to get to Cambridge by train, but I'm afraid I need to travel on Sunday. Will that be possible? Sentence17: Thank you so much. Can I get the reference number also, please? Sentence18: No. Thanks a bunch! Goodbye Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Yes, that sounds like a good choice. Can you book it for me for 3 people starting Saturday? Thanks Sentence2: I was able to book the hotel for you. The reference number is BTTS9GYC . Is there anything else I can help you with today? Sentence3: There are eight accomodations of the hotel type with free parking. What part of town do you prefer? Sentence4: I need a train from norwich to get to the hotel by 16:30. Sentence5: The Cambridge Belfry is an inexpensive, 4 star option on the west side with free wifi and free parking. Sentence6: The west, please. And can I get free wifi? Sentence7: Okay I have a train tat gets to Cambridge at 15:35. Would you like me to book that for you? Sentence8: It doesn't really matter, just need to get there by 16:30. Sentence9: I want a place to stay. Find me a hotel that includes free parking. Sentence10: I have several available. When do you want to leave? Sentence11: I would like to stay for 3 nights. Sentence12: Sure, I can do that. How many nights would you like it for? Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I have checked again. The hotel is listed as "Allenbell" instead of "The Allenbell." Would you like to book a stay there? Sentence2: Ok, thank you. Sentence3: Okay, I have you booked at Chiquito Restaurant Bar then. Reference number is : 6OG10PUW . Sentence4: I am looking for a place to dine. The restaurant should be in the expensive price range and should be in the south of town Sentence5: There is one Italian restaurant in the south. It does have an expensive price range. Not sure if it serves pizza though. Would you like the phone number? Sentence6: The allenbell is not available. Sentence7: How many people and on what day was your previous reservation? Sentence8: Sorry I dont have anything with that name. Sentence9: why is it not? it is there please look again. Sentence10: Thank you for the Cambridge TownInfo centre. Goodbye Sentence11: Thank you, that is all that I need. Sentence12: Yes, I need reservations for the same group of people on the same day as the previous reservation. We will be staying 4 nights. Sentence13: Is there anything else I can help you with? Sentence14: Well let's change that to Mexican and I need a reservation for 2 people at 16:30 on Sunday. Sentence15: Ok. I apologize for the confusion. I booked the room for you and the reference number is DAQEE9BH . Sentence16: I have 2 chinese, indian, italian and mexican food. Did you have a preference? Sentence17: Yes, I prefer italian. I really like pizza. Sentence18: Yeah, I'm also looking for a hotel called the allenbell. Sentence19: are you sure? i was literally there 3 weeks ago... Sentence20: 2 people on Monday is what I would like. Question: Who has spoken the sentence 14? (A) User (B) System

Ex Output:

Answer: (A) User