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

Ex Input:
Sentence1: Your reservation was successful and your reference number is UO8AN5FO . Is there anything else that I can help you with today? Sentence2: I am looking for the Alpha-Milton Guest house and would like to book it for 5 people for 2 nights starting Friday. Can you send me the reference please? Sentence3: That's all, thank you so much! Sentence4: Thank you for calling, enjoy! Goodbye. Sentence5: Sure, what is the name of the hotel? Sentence6: Hello. Can you help me in locating a certain hotel? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User


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: Sure. how many will be traveling? Sentence2: The Cambridge corn exchange is a theatre and the post code is cb23qe. Would you like any more information? Sentence3: No problem! Have a great day. Sentence4: Okay, can you find attractions near the centre? Sentence5: thank you, though there are many choices there isn't a 21:15 so I guess I will take the 21:40 on Friday. Sentence6: It's just me. Can I have the price, travel time, and train ID? Also, do you have any places I can go when I get there? Sentence7: Could you suggest me one? Also let me know of what type of attraction it is and the place's postcode. Sentence8: Thank you, Enjoy the Cambridge Exchange! Sentence9: Wonderful help, thanks Sentence10: Unfortunately no. The earliest that day departs at 21:40. Sentence11: Okay. Can you book that for me please? Sentence12: Is there a train leaving before that? Sentence13: Thanks, I have all I need. Have a nice day. Sentence14: Price is 10.10 pounds, the travel time is 28 minutes, and the train ID is TR4067. I'm sorry, but I don't see any attractions at the Stansted Airport. Sentence15: There are 44 attractions near the center of town. Is there a certain type you're looking for? Sentence16: I'm wondering if there is a train leaving at 21:15 that will take me to the Stansted Airport. Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:

Answer: (B) System