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

Sentence1: That sounds like the best attraction ever. Thank you for all your careful assistance. Have a lovely day! Bye!! Sentence2: I'm looking for a train. Sentence3: I'll be leaving monday and the departure time doesn't matter. Sentence4: I'm sorry for the confusion. I don't show TR9859. I have TR0607 that leaves at 18:06, arrives at 18:56. Travel time is 50 minutes. Does that work? Sentence5: I am looking for a train that goes to Peterborough from Cambridge and arrives by 19:00. Sentence6: Yes, the price is 16.50 pounds. Can I help you with anything else today? Sentence7: Parkside Pools is a swimming pool located in the centre of town. They are located at Gonville Place. Their postcode is cb11ly. They can be reached at 01223446100. Sentence8: Yes, I am also looking for more information on parkside pools. Can you tell me what kind of attraction it is? Sentence9: And you have a wonderful day as well! Sentence10: Sure that's fine, does that have the same price? Sentence11: What is your departure day and time? Sentence12: for 16.50 pounds TR9859 leaves at 05.56 Sentence13: Okay, does TR9859 arrive by 19:00? I would also like the travel time, please. Sentence14: I'll be happy to help. Can you tell me where you are leaving from and where you are going? Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User