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: TR7966 departs at 5:40. Sentence2: Your booking was successful. Reference number is : M0ZETXSZ . Is there anything else I can help you with? Sentence3: There are 33 different lodging options in town. Do you have a preference for type, area, pricerange, or star rating? Sentence4: Type doesn't matter. I want it to be cheap and in the north. With a 4 star rating. Sentence5: Great. Now I need a place to stay. Sentence6: The worth house is located in the north and cheap, would you like a reservation? Sentence7: Yes, that works. Can I get the train id number and the price please? Sentence8: I need a train to stansted airport from cambridge please. Sentence9: What area and price range are you looking for? Sentence10: What is the departure time of that also please? Sentence11: That's great. Have a safe trip. goodbye. Sentence12: It should be a 4 star hotel. Sentence13: Ok, what day will you be traveling? Sentence14: the train Number is TR7966, it will cost you 10.10 pounds. Sentence15: No thank you. I am all set. Sentence16: Is it rated 4 stars? Sentence17: Yes it is a four star. It also has free internet and free parking. When were you planning your stay? Sentence18: book it for 7 people and 5 nights starting from saturday Sentence19: Thursday. I need to arrive by 12:45. Sentence20: The closest to thing I can find is a train leaving at 5:40 on Thursday. It arrives at Stansted Airport at 6:08. Is this okay? Question: Who has spoken the sentence 2? (A) User (B) System

Output: Answer: (A) User

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: There is the Ashley Hotel and Lovell lodge. Both are 2 stars. Which do you prefer? Sentence2: There has got to be at least one hotel in cambridge! Try for 3 nights. Sentence3: I need the hotel reserved for 3 people for 4 nights starting on thursday. Sentence4: Have a good day and I hope you enjoy your stay in Cambridge! Sentence5: Sorry, there were no results found. Sentence6: Which one is in the centre part of town? Sentence7: Sorry, no results were found. Sentence8: How about a hotel then in the cheap price range? Sentence9: No thank you that will be all Sentence10: sorry to disappoint but we dont have any Sentence11: Yes I need centre of town. Sentence12: No thank you that will be all Sentence13: We actually do have 10 cheap places to stay in Cambridge. 9 are guesthouses and 1 is a hotel. Sentence14: Can you try a cheap hotel? Sentence15: Out of the 10, there was one that was a hotel and not a guesthouse, the Cambridge belfry, I booked you, the reference number is DK6K73QS . Anything else today? Sentence16: I'm sorry but there are no cheap hotels in cambridge. Sentence17: Both are in the North. Are you looking for something in the Centre? Sentence18: I need to find a moderately priced condo style hotel in Cambridge that includes free parking. Question: Who has spoken the sentence 16? (A) User (B) System
Output: Answer: (A) User