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

Q: Sentence1: Graffiti sounds good. I actually need that reservation for 5 people at 20:00 on Wednesday. Can I have the reference number for that? Sentence2: There are two trains that would work. One arrives at 07:07 and the other arrives at 01:07. Which one would you prefer? Sentence3: I would recommend Graffiti. It is a bit expensive, so if you want something moderately price there is also Saint Johns Chop House. Sentence4: Great, thanks! That's all I needed right now! Sentence5: Alright, I've booked a train for your group, the reference number is AOIMGBHK, and there will be an 83 GBP fee at the station. Sentence6: What time would you like these reservations? Sentence7: I need to find a British restaurant in West Cambridge. Sentence8: i can definitely do that, how many tickets would you like? Sentence9: No, can you recommend a favorite? Sentence10: I would also like a train departing from london liverpool street and arriving in Cambridge at 09:00 on the same day. Sentence11: Please book 2 tables for 8 people on friday also i need train tickets for 8 people. Sentence12: There are multiple options for you. To narrow them down what price range do you have in mind? Sentence13: Can you book the train that arrives at 07:07 that one would work great. I need the reference number as well. Sentence14: it's for the same group of people Sentence15: Booking was successful. The table will be reserved for 15 minutes. Reference number is : YYPPDY56 . anything else i could help you with? Sentence16: You're welcome. Have a great day. Question: Who has spoken the sentence 11? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: Booking completed! Booked car type : red ford Contact number : 07059574947 Sentence2: Thats everything I needed thanks for the help! Sentence3: I'm afraid there aren't any theatres on the west side. most of our theatres are in the city centre. is there something else I can look up for you? Sentence4: Yes, I love museums. Sentence5: Yes I also need a taxi to arrive there by 18:00 from the theater. Sentence6: I'll be here any time. Sentence7: Can you find a restaurant called Rajmahal. Sentence8: There are several museums in the area. Would that interest you? Sentence9: Great, thanks. I'm also interested in attending a theatre on the west side. Sentence10: Ok are there any attractions in the west you recommend? I need a phone number for whatever you chose. Sentence11: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 1XCDMW6O . Sentence12: In the west if there are any there? Sentence13: Sure. It's an Indian place in the east area of town. What would you like to know about it? Sentence14: What entertainment choices are in the west? Sentence15: sorry, i couldn't find anything in the west. Sentence16: That's all I need to know. Can you reserve me a table for 3 Saturday at 18:00? Sentence17: How about the Kettle's Yard, there phone # is 01223748100 and they are on Castle Street. Admission is free too. Does this work? Sentence18: What side of town would you like to be on? Question: Who has spoken the sentence 13? (A) User (B) System

A: Answer: (B) System
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Q: Sentence1: unfortunately i don't have anything that meets all those criteria. is there anything you'd like to change? Sentence2: Yes, I need internet and free parking. Sentence3: Yes, please. I would also like the reference number. Sentence4: Sure, we have many. Are you looking for anything else specifically? Sentence5: I'm looking for a guesthouse to stay at that has a 4 star rating. Can you help? Sentence6: There are no hotels that meet that criteria. Would you like to search for something else? Sentence7: A moderate price range. I need 2 nights beginning Monday and the reference number. Also looking for a train, same people same day as hotel and reference number as well. Sentence8: i need an expensive hotel in the north Sentence9: Yes, I would like to be in the north. Oh and I would like to be in the expensive price range. Sentence10: Would you like me to book it for you ? Sentence11: One more time let me know exactly what you need by looking at what you wrote down on your right, so we can book you. Sentence12: May I recommend the Acorn Guest House at 154 chesterton road. Would you like me to book a room for 1, for 2 nights starting Monday? Sentence13: To help narrow this down, can you tell me what area of town you'd like most? Sentence14: I prefer a guesthouse please. I only need it for myself for 2 nights starting from monday. Sentence15: Is there something else I may be able to help you with today? Sentence16: No I will figure something out Sentence17: There are 9 options. Do you prefer a guesthouse or hotel? Sentence18: I lied. I don't need free internet and parking. Question: Who has spoken the sentence 16? (A) User (B) System

A:
Answer: (A) User
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