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

Ex Input:
Sentence1: The area doesn't really matter, can you pick a popular me for me? Sentence2: hmm, what about chinese food? Sentence3: You're all set! It's a grey volvo. If you need to contact the driver for any reason, the contact number is 07174343971. Sentence4: Yes, I'd like to take my husband there at 11:30 on Wednesday. Sentence5: Sure I've found an expensive place named yu garden in the east, would you like me to book something? Sentence6: Thank you, you were a great help. That's all I needed. Sentence7: have great day too Sentence8: welcome and have a great day Sentence9: Booked! The table will be reserved for 15 minutes. Your Reference number: 5R5C75ZP . Sentence10: Would you like me to reserve it for you. Sentence11: Sure. What time would you like to leave? Sentence12: I'd also like to book a taxi from the pool to the restaurant that arrives by the reservation time. Sentence13: Parkside Pools is centrally located and their address is Gonville Place. Is there anything else I can help you with today? Sentence14: i am looking for a swimming pool. Sentence15: I'll be going now. Good-bye Sentence16: As long as it arrives by 11:30 it doesnt matter when it leaves Sentence17: Sure, which part of town are you looking for? Sentence18: I'm looking for a sri lankan restaurant. Sentence19: Yes, please. I'll need the contact number and car type. Sentence20: I'm sorry. I'm not able to find anything that meets your criteria. Would you like to try a different type of food? Question: Who has spoken the sentence 17? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: It's cb12bd. Anything else I can get you? Sentence2: How about something in the south and moderate price range? Sentence3: I'll take Rice House, what's the postcode? Sentence4: There are 3 cheap chinese restaurants in the centre of town: Charlie Chan, Rice House, or Golden House. Would you like me to book any of these? Sentence5: Sure let's try chinese food. Sentence6: I was not able to find any restaurants matching your requirements. Sentence7: I'm still not finding anything. Would you like me to search a different part of town or a different food type? Sentence8: You're welcome. Have a great day! Sentence9: That's all. Thank you. Sentence10: I am looking for a cheap gastropub restaurant in the centre of town Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I would like to stay at the El Shaddai. I would like to book it for 1 person for 4 nights starting on Wednesday. Sentence2: I'm looking for a train that will be leaving on Sunday going to Peterborough. Sentence3: There are 38 trains, what time would you like to depart or arrive? Sentence4: Indeed it is! I just booked you for two nights, ref num: IC0RATQI . Do you need anything else today? Sentence5: Your trainID TR9733 has been booked to leave at 12:34. Than you. Sentence6: That's all. Thank you very much. Sentence7: We are happy to help. Thank you for using our service. Have a wonderful day! Sentence8: I also need a room in Peterborough. Sentence9: Unfortunately I was not able to book the hotel for then. Would you like to book another day or consider shortening your stay? Sentence10: There are 32 trains travelling to peterborough on Sunday departing from cambridge. The closest arrival time is 21:24, would you like to book a seat? Sentence11: There are many results for hotels and guesthouses, could you be more specific on what price range you are looking for and what part of town? Sentence12: Yes, for 1 person please, and give me the reference number. Sentence13: Is it possible to book this reservation for 2 nights? Sentence14: I need to get there by 21:30. Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:

Answer: (B) System