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 can get you a ticket on the tr8495 it will get you there by 10:55, or is that too early? Sentence2: I'm sorry I changed my mind. I just need the price per ticket please. Sentence3: I'll be going from Cambridge to Norwich. Sentence4: Yes. Please reserve for 5 people on Monday at 14:00. Sentence5: Have a great day and enjoy your time in cambridge. Sentence6: No that sounds good,please book it for me Sentence7: I also need a moderate restaurant in the town centre that serves European food. Sentence8: The price is 17.60 pounds sterling. Can I help with anything else? Sentence9: How many tickets will you be needing? Sentence10: Booked. The table will be reserved for 15 minutes. Reference number: XLZVMYRL . Sentence11: I need to take a train to here. I want to arrive by monday at 17:15. Sentence12: Great. I can't wait. Thanks! Goodbye! Sentence13: The riverside brasserie serves modern european food. Would you like to make a reservation today? Sentence14: Okay, there are plenty of options. Where are you headed? Question: Who has spoken the sentence 11? (A) User (B) System
Output:
Answer: (B) System