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

[EX Q]: Sentence1: Would that be London Liverpool or London Kings Cross? Sentence2: We don't have any trains going from Ely to London Liverpool or London Kings Cross. Do you need anything else? Sentence3: I will be leaving from Ely and going to london. Sentence4: Are you sure you don't have a preference? Sentence5: Either one is fine with me. Sentence6: On Saturday I need a train that will arrive by 21:45. Sentence7: Yes I'm sure. I need to book that for 5 people. Sentence8: Can you tell me where you will be departing from and heading to? Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Yes, free internet is included at The Cambridge Belfry. Sentence2: Great, I'd like to book at room at The Cambridge Belfry. Sentence3: The cambridge belfry matches those requirements. Sentence4: I can book your room now. Thank you so much Sentence5: I am looking for a 4 star hotel that has free parking. Sentence6: Does it have free internet? Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: There are 10 trains on Saturday that go to Ely from Cambridge. What time do you need to leave or arrive, and how many tickets do you need? Sentence2: I am looking for a train that leaves Saturday going to ely, do you have a train with those details? Sentence3: I've done that. The price will be 14.08 GBP payable at the station. Your reference number is IR7HSMG4 . Any else I can do for you? Sentence4: There is one train that arrives at 12:07. That trainID isTR0718. Sentence5: I need a booking for 4 people. Sentence6: I need to arrive by 13:00. Sentence7: Thank you, you have been very helpful. Sentence8: No, that will be all Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]:
Answer: (A) User