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: The address is Parkside, Cambridge. The phone number is 01223358966 Sentence2: I can get you the number for Parkside Police Station, is that close to your location? Sentence3: I was in a car dispute and I am looking for help Sentence4: Goodbye. I hope the police are able to help you resolve the situation. If you think of anything else we can help you with don't hesitate to ask. Sentence5: No,thank you. Goodbye Sentence6: Thank you for using our services. Do you require any further assistance? Sentence7: Thank you. That is all I needed. Sentence8: I believe so. What is the police address and phone number? Question: Who has spoken the sentence 7? (A) User (B) System
Output:
Answer: (B) System