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

Ex Input:
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

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Of course, when would you like your reservation to be and for how many people? Sentence2: Do you have a area preference? Sentence3: No that will be all. Sentence4: Excellent, I have booked you a table for 6 at 17:00. Tables are reserved for 15 minutes. The reference number is RI11SSDU . Sentence5: Does it have free wifi? Sentence6: Acorn guest house matches your requirements, would you like to book there? Sentence7: Do you need anything else? Sentence8: What are my choices for a moderate hotel? I don't need free parking. Sentence9: The hotel does have internet. Sentence10: I have results for 18 moderately priced places, what area are you looking to stay in? Sentence11: Great can I get their address, phone number, and postcode? Sentence12: I would like to make a reservation at Hotel Du Vin and Bistro. Sentence13: I have 2 European and 2 Modern European. Do you have a preference? Sentence14: Thank you for contacting Cambridge TownInfo Centre, enjoy you hotel stay and your dinner! Sentence15: I would like the restaurant to be in the Centre and serve European food. Sentence16: The acorn guest house is located at 154 chesterton road, postcode cb41da and the phone number is 01223353888. Sentence17: Yes, in the centre. Sentence18: Six people on Wednesday, at 17:00 Sentence19: Thank you so much for all your help! Sentence20: I am also looking for a restaurant. The restaurant should be in the same price range as the hotel and should serve European food. Sentence21: No particular area, I need a hotel with a 4 star rating. Sentence22: There are 2 to choose from: Hotel Du Vin and Bistro, and Galleria, and there are 2 others that are similar, but serve modern european. Do any of these sound good? Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: There is All Saints Church , do want the adress and phone number ? Sentence2: I am also looking for a good attraction in the center part of town. Sentence3: Yes, they do. Sentence4: Would you like their address or phone number? Sentence5: I am looking for a certain hotel. I think it is called Rosa's Bed and Breakfast Sentence6: First of all, do they have free parking? Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System