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

[Q]: Sentence1: Don't worry, I should be able to help you. Do you know which station you'll be leaving from or going to? Sentence2: What is your destination? Sentence3: Hi, I am trying to plan a trip and need some help with a train. I'm not familiar with trains at all unfortunately. Sentence4: I'm departing from leicester and I need to leave on friday. Thank you for helping! Sentence5: I also need a place to stay. Sentence6: 11 pm and I want it for three people Sentence7: I'm going to Cambridge. Sentence8: We have many great places to stay. What area would you like and do you have a price range? Sentence9: Is there a time you would like to arrive by? Sentence10: TR6539 will arrive by 22:54. Booking was successful, the total fee is 113.4 GBP payable at the station. Your reference number is IE5RK2IG . Do you need anything else? Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User

[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: Are you looking to go by train or taxi? Sentence2: We have a train leaving cambridge at 19:40 arriving at stansted airport at 20:08. Should I book seats for you? Sentence3: Happy to be of service - enjoy your day! Sentence4: What type of attraction is is? Sentence5: Train leaving cambridge going to stansted airport on wednesday anytime after 18:45 Sentence6: There is no entrance fee for the people's portraits exhibition at girton college Sentence7: Great, thanks. I also am interested in the People's portraits exhibition at the Girton College, can you tell me more about that? Sentence8: Could you tell me if they have an entrance fee? Sentence9: TR2694 leaves at 19:40 and costs 10.10 pounds Sentence10: It's located in the west of town and is free of charge. Their phone number is 01223338901. Can I help you with anything else? Sentence11: No, not at this time. I would like to know the travel time and price, please? Sentence12: people's portraits exhibition at girton college is a museum in the west area of town. Their address is girton college, huntingdon road. Can I help with anything else? Sentence13: I need to go to the stansted airport on wednesday. Sentence14: that will be all, thanks! Question: Who has spoken the sentence 10? (A) User (B) System
[A]:
Answer: (A) User