Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Ok, I've got train TR3730 that leaves at 07:06 and would put you in Peterborough by 07:56. Would that work for you? Sentence2: No that takes care of all my needs for now. Thanks! Bye! Sentence3: Great, I'm also looking for a swimming pool in the north. Can you find me one? Sentence4: I can help! What time are you looking to depart? Sentence5: There are 2 to choose from - Jesus Green Outdoor Pool and Kings Hedges Learner Pool. Which would you prefer? Sentence6: Either is fine, I just need the postcode. Sentence7: The postcode is cb43px. Anything else. Sentence8: You are welcome. Glad I could help. Sentence9: I'm interested in finding a train to peterborough on Wednesday please Sentence10: on wednesday by 8 15 please Sentence11: Yes that will work great can you book me 2 tickets? Sentence12: Booking was successful, the total fee is 33 GBP payable at the station. Reference number is : J7JWEILX . Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System