You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
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Question: Sentence1: I do not care about the area but I would like it to be expensive. Sentence2: How about the Gonville Hotel which is centrally located? It has internet and is expensive. Sentence3: I found 5 hotels matching your request. I would recommend Huntingdon Marriott Hotel located in the west. It has a 4 star rating. Sentence4: Will you be needing a reference number? Sentence5: On what day will you be checking in? Sentence6: 4 people will be staying Sentence7: I also need a place to stay? Sentence8: Your table will be reserved for 15 minutes. Your reference number is GDZZ5T1Y . Can I assist you further? Sentence9: That is all, thanks. Sentence10: Booking was successful. Reference number is : M6FRXJOV . Sentence11: I have many to choose from. Do you have a preference for internet or parking? Sentence12: Alright! How many people will be staying starting what day? Sentence13: There are 11 European style restaurants. What price ranges are you looking for? Sentence14: Yes, I would like it to have internet. Sentence15: That sounds perfect. Let's book it. Sentence16: There are 33 hotels to choose from. Can we narrow this down? Are you interested in a particular part of town or specific price range? Sentence17: Expensive price range. Please book it for 4 people at 18:15 on Monday Sentence18: Can you help me find some european food in Cambridge? Sentence19: How about price range? The hotel should also be very expensive. I won't settle for less and neither will Fi-Fi. Sentence20: I will be staying on Monday. Sentence21: Yes I will definitely need that. Sentence22: Great. If you need help in the future, please contact us. Enjoy your stay. Question: Who has spoken the sentence 16? (A) User (B) System

Answer: Answer: (A) User

Question: Sentence1: Let's try for saturday, but if that is not available then tuesday would be fine Sentence2: I was able to book you for Saturday. Sentence3: That will be all, thanks again. Sentence4: I would like to leave after 21:30. Sentence5: What day will you be arriving? Sentence6: I found Alexander bed and breakfast . Do you want to make a reservation? Sentence7: Yes bookit for the same group of people 4 nights. Sentence8: thanks can I get a reference number please? Sentence9: Yes, i am looking to book a room at the alexander bed and breakfast. Sentence10: You are welcome enjoy Sentence11: Would you like to leave or arrive by a certain time? Sentence12: Yes, whichever train has seats available for 7 people. Sentence13: I'm looking for a train that goes to Cambridge on Saturday Sentence14: I will be departing from broxbourne. Sentence15: We have 3 options that meet your criteria. All depart within an hour of each other starting at 21:32. Would you like me to book one of them for you? Sentence16: Your booking was successful, the total fee is 100.24 GBP payable at the station. The train departs at 21:32. Your reference# is UZFW2TAQ . Is there anything else? Sentence17: Where will you be departing from? Sentence18: Your reference number is XVE54KKH . Is there anything else I can do for you? Question: Who has spoken the sentence 5? (A) User (B) System

Answer: Answer: (B) System

Question: Sentence1: There are three options to choose from. The Huntington Marriott Hotel, The Cambridge Belfry, and the University Arms Hotel. Which would you like? Sentence2: Let's go with Shiraz. I need a booking for 5 at 16:30 on saturday. Sentence3: Is it available on Saturday. Sentence4: I am also looking for a four star hotel. Sentence5: Thanks for all the help. That's all I needed today. Sentence6: How about alexander bed and breakfast? Sentence7: Yes. Please book it for 4 people and 5 nights beginning saturday Sentence8: I'm looking for an expensive restaurant in the centre Sentence9: Your table has been booked for 16:30 and will be reserved for 15 minutes. The reference number is VORP2NWK . What else can I do for you today? Sentence10: Which part of time would you like to stay in? Sentence11: Great. Is there one that serves mediterranean food? Sentence12: I want it to be a 4 star guesthouse with free parking and internet Sentence13: You are booked. The reference number is C9LRRET8 Sentence14: Maybe the centre near my restaurant. Sentence15: sure, i have 33 options for you Sentence16: I happen to have 2 great ones. La Mimosa is available, as well as the newer one called Shiraz Restaurant. Would you like more info on one of these? Sentence17: Thanks for contacting Cambridge TownInfo centre have a wonderful trip. Goodbye. Sentence18: Yes. Would you like me to book that for you? Sentence19: There are actually 16 guesthouses to choose from. Is there an area of the city that you prefer? Sentence20: Starting Saturday for 4 people for 5 nights. Question: Who has spoken the sentence 16? (A) User (B) System

Answer:
Answer: (A) User