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

Input: Consider Input: 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

Output: Answer: (B) System


Input: Consider Input: Sentence1: Might I suggest the Autumn House. It is a cheaper guesthouse that offers both free parking and free internet. Would you like more info for them? Sentence2: It really doesn't matter. I don't need internet. I just for sure want a 4 star place. Sentence3: Thank you! Can you also get me a train going to Cambridge that day? Sentence4: Sure. There are six different options in that area. What were you looking for as far as price range and amenities? Sentence5: Is there anything else that you need? Sentence6: I need a 4 star hotel in the east, please. Sentence7: I think this is what I needed. Thanks. Sentence8: Sure! I just need to know where you plan on departing from and what time you'd like to leave. Sentence9: Booking was successful. Reference number is : 544D87NG . Sentence10: I need a room for 4 for 4 nights starting on Tuesday. Question: Who has spoken the sentence 3? (A) User (B) System

Output: Answer: (B) System


Input: Consider Input: Sentence1: I prefer something in the north. And a guesthouse would be better. Sentence2: Da vinci pizzeria is located at 20 Milton Road Chesterton, postcode cb41jy and their phone number is 01223351707. Sentence3: I found two cheap places in the north. 1 indian on Victoria Ave and 1 italian at 20 Milton Rd both in Chesterton. Is that all? Sentence4: Please book it for 1 people for 2 nights starting from friday. Sentence5: No, but free wifi and four star please. Sentence6: You've been successfully booked and your reference number is TJZMY6L9 . Is there anything else you need? Sentence7: Enjoy your stay! Sentence8: Let's try the Italian one. Can I get the postcode and phone number for it, too? Sentence9: No, that would be all. Thanks. Bye. Sentence10: Great, thank you for all your help today. Sentence11: Are there any 4-star places to stay that also have free wifi? Sentence12: Yes, there are 21 places found. Do you have a specific area in mind? Sentence13: Anything else I can help with? Sentence14: The Acorn Guest House is a nice 4 star guesthouse in the north with free wifi. Would you like me to book a room? Sentence15: Yes, I'm also looking for a cheap place to eat that's also in the north. Sentence16: I have eight places, do you have a price range in mind? Question: Who has spoken the sentence 15? (A) User (B) System


Output: Answer: (B) System