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

Sentence1: Sure would. What time does it depart and how much does it cost? Sentence2: I am going to Cambridge on Sunday. Sentence3: I'm looking for a train that departs from peterborough and arrives by 19:30 Sentence4: There is a train that arrives at 19:09. Would that do? Sentence5: leaves at 5:19 13.2 GBP payable at the station your reference number is CLPW6OR9 Sentence6: Where would you like to go to? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System