Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Thanks, that's all. Good bye. Sentence2: Their telephone number is 01223358966 and they are located in Parkside, Cambridge CB11JG. Sentence3: Thanks, I need the phone number, address and postcode. Sentence4: That police station is located at Parkside, Cambridge Sentence5: Thank you for using our services. Sentence6: Hello there, could you tell me where the Parkside Police Station is please? Question: Who has spoken the sentence 5? (A) User (B) System
Answer: (B) System