Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Yes please. I need tickets for 2 people. Sentence2: Okay, booking was successful, the total fee is 150.19 GBP payable at the station. Reference number is : 3YS7IOSA . Anything else I can help you with? Sentence3: I want a place to stay in the north of town. Sentence4: How about train TR7324 that leaves at 21:40 and arrives by 24:23. Would you like to make reservations on that? Sentence5: I am also looking for a train. Can you help me with that? Sentence6: The train should go to cambridge and should leave after 21:15. The train should depart from birmingham new street and should be on the same day as the hotel booking Sentence7: I would like something with a 2 star rating if possible. Sentence8: I need the train to leave after 21:15. I also need it booked for two people. Sentence9: That will be all today.. Thanks. Goodbye Sentence10: Okay, any other preferences? We have plenty of options. Sentence11: Yes your reference number is N9AC95R7 . I hope you enjoy your stay. Sentence12: I have train TR3736 leaving at 6:40 and arriving at 9:23. Would you like to book that? Sentence13: We have ashley hotel on chesterton road or lovell lodge on milton. Would you like me to book one of those? Sentence14: Bood ashley hotel for 2 people and 3 nights starting from Thursday. What is the reference number please? Sentence15: Enjoy your stay in Cambridge! Sentence16: Of course. When would you like to leave by? Question: Who has spoken the sentence 2? (A) User (B) System
A:
Answer: (A) User