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

Sentence1: May I have the train ID for that one? Sentence2: I'd like to leave from Broxbourne sometime after 12:30. Sentence3: Certainly. That train ID is TR7834. Sentence4: What is the travel time? Sentence5: Travel time will be 60 minutes. Sentence6: Yeah, I can do that. Where are you heading in from? Sentence7: Perfect! Have a wonderful day! Sentence8: I have 12 available trains. The first leaves at 12:32 and arrives at 13:32. Would you like me to book that for you? Sentence9: Hello there. Can you please find me a train schedule that leaves on Wednesday heading for Cambridge? Sentence10: Thank you. That is all I will need. Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User