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

[Q]: Sentence1: The phone number is 01223420060 and the post code is cb46az. Sentence2: Ok. I booked four tickets for you. Your reference number is FRSZ5A8R . Can I help you with something else? Sentence3: Yes. Book for 4 people. Sentence4: I would like the phone number and postcode for it please. Sentence5: What information are you looking for? Sentence6: Sounds great, before i let you go, I just want to make sure we have covered everything that you need. Sentence7: yes you did Sentence8: TR6806 will leave at 10:01 and arrive at 11:01. The trip will take 60 minutes and it will cost 17.90 pounds. Would you like to book? Sentence9: Thank you! That's all I needed, thanks so much. Sentence10: enjoy your stay in Cambridge! Sentence11: I'm going from cambridge to broxbourne any time after 09:15. Sentence12: I show 404 rail departures on Thursday, can I get something specific for you? Sentence13: I want a train leaving on thursday. Sentence14: Im also looking for a place by the name of milton county park. Question: Who has spoken the sentence 4? (A) User (B) System
[A]: Answer: (A) User

[Q]: 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
[A]: Answer: (B) System

[Q]: Sentence1: I'll be going from the museum to the hotel. I'll need to leave by 09:30 please. Sentence2: I'm sorry I have no entertainment options in the center of town. Would you be interested in trying another type of attraction or area? Sentence3: Yes can you look for a museum? Sentence4: The highest rated one you have, I need 5 people booked for a 2 night stay starting saturday. Sentence5: Of course! To book a taxi, I'll need to know your travel destination, departure site, and time please. Sentence6: What are you interested in? Sentence7: i also need to use a taxi Sentence8: that is all for today thanks very much Sentence9: There are 5 options available. Do you prefer a specific area or number of stars? Sentence10: there is the museum of archaelogy and anthropology Sentence11: Can you tell me the different museums available? Sentence12: Can I get the postcode for the museum as well? Sentence13: I am looking for a entertainment attraction in the centre of town. Sentence14: I have 2 options available. The Huntingdon Marriott Hotel in the West, and the University Arms Hotel in the Centre. Both are 4 star with internet and parking. Sentence15: Are there any that feature anything archeological items? Sentence16: Yes there are 11 different museums in centre. Are you interested in a particular type? Sentence17: Any time, happy to help! Have a good day! Sentence18: Of course. The postcode is cb23dz. Can I help you with anything else today? Sentence19: Booking was successful. Reference number is : 5K1TGKMU . Sentence20: You are all set. Please look for a blue Toyota, which will arrive by 9:30. The contact number is 07988683424. Do you need anything else today? Sentence21: Yes their telephone number is 01223333516. Sentence22: Can you book the marriott hotel for 5 people and 2 nights on saturday? Sentence23: I need an insanely expensive hotel that has free wifi Sentence24: That sounds great. Can you give me the phone number? Question: Who has spoken the sentence 9? (A) User (B) System
[A]:
Answer: (B) System