Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Sure! What is your destination and departure preference? Sentence2: There is a 12:11 is that is not too soon for you to leave. Sentence3: I am looking for train leaving on Friday. Sentence4: I will be going to the lovely village of Kings Lynn, it be be after I get out of work, so I need to leave after 21:30. Sentence5: I said 21:30. Try again. Sentence6: I'm sorry I misunderstood you. There are 2 trains leaving after 21:30. TR0394 leaves at 22:11 and TR2311 at 23:11 both depart from cambridge. Question: Who has spoken the sentence 3? (A) User (B) System
A:
Answer: (B) System