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

[EX Q]: Sentence1: Hi, I'd like to book a train that leaves after 21:30 on Friday. Sentence2: You're very welcome! Enjoy your trip! Sentence3: There are 4 restaurants that serve gastropub cuisine. Do you have a location and/or price preference? Sentence4: Yes could you provide me with the travel time and arrival time as well please? Sentence5: Moderate price range please. Sentence6: Please, for 7 people at 13:00 on the same day. Sentence7: TR8202 is leaving cambridge at 22:01 would that work for you? Sentence8: I'll be leaving Cambridge and traveling to Birmingham New Street. Sentence9: Yes can we try the south? Sentence10: The travel time for the TR8202 is 163 minutes. The arrival time is 24:44. Is there anything else I can help you with? Sentence11: I'm also looking for a place to dine. The restaurant should serve gastropub food. Sentence12: Perfect, there's a place called The cow pizza kitchen and bar, would you like me to book it? Sentence13: Sure, where are you departing from and going to? Sentence14: How about centre? Sentence15: Booking was successful. The table will be reserved for 15 minutes. Reference number is : BGGCS2UB Sentence16: Thank you so much. That's all I need today. Have a great day! Bye. Sentence17: Yes, there are 3! Price ranges are moderate and expensive. Does one of those suit you? Sentence18: I am sorry there are none in the South. There are 3 in the centre and 1 in the east. Will one of those area work for you? Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I want to know if the Worth House is still renting rooms. Sentence2: Yes make the booking or me for 2 and provide the reference number. Sentence3: Ok, I was able to make your reservation. Your total fee is 33.2 GBP. Your Reference number is : POE0NTR1 . Sentence4: yes book for 2 people and 3 nights from thursday Sentence5: Thank you very much. That is all the information I need. Sentence6: The TR1047 leaves Cambridge for London Liverpool Street Wednesday arriving at 07:27. The price is 16.60 lbs. Can I book it for you? Sentence7: Where are you departing from, and what day? Is there a certain time you need to leave or arrive by? Sentence8: i am planning your trip in Cambridge Sentence9: Sure, you really should be more pleasant. I need to get to London Liverpool Street on Wednesday by 20:45 please. Sentence10: Okay great! Have a great trip! Sentence11: Thanks. I also need to find a train to london liverpool street. Sentence12: Are you planning a trip to Cambridge? If so, what type of information are you looking for today? Sentence13: Since this is the cambridge help desk, I assumed that, I really need the date and time to get you booked. Sentence14: I am leaving from Cambridge. Sentence15: Yes they are. Would you like to book a room? Sentence16: Booking was successful. Reference number is : WX6QA7D0 . Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Thank you, have a great visit, goodbye! Sentence2: Yes, book please and I need travel tome and price Sentence3: I have many trains available on Tuesday. Do you have a time preference? Sentence4: I only need one ticket today. Sentence5: No, thank you for your help Sentence6: How many tickets would you like me to book? Sentence7: The TR 4631 arrives by 19:23. Would you like to book this one? Sentence8: Your booking was successful, the total fee is 75.09 GBP payable at the station. Your Reference number is ZCR9P2WW . Can I assist you with anything else today? Sentence9: I'd like to take the train to cambridge from birmingham new street on tuesday, can you help me with that? Sentence10: Yes, I'd like to arrive by 19:30, please. Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]:
Answer: (A) User