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

Ex Input:
Sentence1: We have three places that serve international cuisine that you should like. Do you prefer East or Centre? Sentence2: Yes, that would be great. Can you book a table for 4 people at 11:30 on Sunday? Thanks Sentence3: Can you help me find a corsica restaurant? Sentence4: I also need a train that will arrive by 18:15. Sentence5: TR7786 can have you there by 17:51. It costs 23.60 pounds. Sentence6: Sure, which stations are you traveling between? Sentence7: Then can you find me one that serves international food? Sentence8: The Centre is fine. I need a table for brunch on Sunday. Sentence9: I was able to book your party of 4 into Bloomsbury Restaurant on Sunday at 11:30 , Reference: 4ni28yk5 . Can I assist you further today? Sentence10: There is no restaurant serving corsica food in the town. What is another type of food you would like me to search for? Sentence11: What is the travel time? Sentence12: Goodbye, enjoy the rest of your day! Sentence13: The trip takes 51 minutes. Would you like me to book that train for you? Sentence14: I recommend the Bloomsbury Restaurant. It's located at Crowne Plaza Hotel, 20 Downing Street. It's a moderately priced restaurant. Can I book this for you? Sentence15: not now. that is all i needed. have a good day Sentence16: I'll be leaving Cambridge on Monday and I'd like to arrive to London Kings Cross by 18:15. Is there anything available? What time will it leave? Question: Who has spoken the sentence 7? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Where are you headed? Sentence2: anytime after 21:00. Sentence3: What time monday would you like to depart? Sentence4: okay, I do need the reference number also. Sentence5: Birgmingham New Street from Cambridge Sentence6: Yes will you book it for me ? Sentence7: I highly recommend Zizzi Cambridge in centere. It has excellent pasta and meatballs. Would you like me to book a reservation for you? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : DKSUCWY6 . Sentence9: Yes, on Monday for 2 people at 14:30. Olease give the reference number. Sentence10: thank you that will be all good bye Sentence11: I need 2 tickets and a reference number please Sentence12: My apologies, busy weekend and the system is lagging, you are set, reference number is B6SGLAAT total cost is 150.19 GBP, thank you for your patience. Sentence13: Have a nice day, goodbye. Sentence14: How many tickets will you need? Sentence15: Thank you so much, can you please also find me an Italian restaurant in the centre of town that's on the cheap side? Sentence16: TR8406 will depart at 21:40. Is that okay? Sentence17: I need a train on Monday leaving birmingham new street? Sentence18: Sure thing. I will work on getting this booked for you. Question: Who has spoken the sentence 10? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Yes I also need to book a train for 3 people on Thursday between Bishops Stortford and Cambridge arriving by 09:00. Sentence2: How about the moderately priced Rosa's Bed and Breakfast? I also have 22 other entries, if you would prefer something else. Sentence3: Hello, I am looking for a place to stay in Cambridge. Sentence4: I can help with that. Do you have an area of town, or a price range in mind? Sentence5: Yes I most certainly can! I have booked you into the Rosa and your reference number is 06D0FC6L . Sentence6: It was my pleasure. Safe travels! Sentence7: I have a 7:29 that gets into Cambridge at 8:07. I booked three people on this train per your instructions. The total cost is 30.29 pounds and your reference is 9AR1CBJM . Sentence8: I would like a guesthouse type but the price range is not as important. Sentence9: Thank you very much for your help today. Sentence10: There are 32 hotels that have free wifi. Do you have any preference of price range or area, or should I choose one for you? Sentence11: Ok, almost all of the hotels have free wifi, do you have a star rating you would like? Sentence12: Rosa's Bed and Breakfast sounds fine. Can you book it for 3 people arriving on Thursday for 5 nights? Sentence13: I don't care. Sentence14: I'm not picky about the area of town or the price, but I absolutely need free wifi! Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:

Answer: (A) User