You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I will be departing from Leicester. Sentence2: Thank you, and have a pleasant trip. Goodbye. Sentence3: Sure. The TR8292 departs at 13:09. The ride is 105 minutes long. Do you have any other questions? Sentence4: I don't actually need to book at the moment. I just need to know the departure time and travel time for this train, if you don't mind. Sentence5: I am going to cambridge Sentence6: TR 8292 arrives in Cambridge at 14:54 on Wednesday. It costs 37.80 pounds. How many tickets can I book for you? Sentence7: No, that's all for today. Goodbye! Sentence8: As long as i arrive close to 16:00 I am good. Sentence9: There are trains arriving in Cambridge 6 minutes before the hour throughout the day. Which time would be best for you? Sentence10: Where are you departing from? Sentence11: What will be your destination? Sentence12: I'm going to need a train on Wednesday. I need to arrive by 16:00. Question: Who has spoken the sentence 3? (A) User (B) System
Output:
Answer: (B) System