Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: You're very welcome. Is there anything else I can assist you with today? Sentence2: Thanks, that's all. Good bye. Sentence3: Hi, I want to find the police station that's nearest to me. Sentence4: The Cambridge police station is located at Parkside in the CB11JG postcode. Sentence5: You are welcome. Thanks for using TownInfo centre. Goodbye. Sentence6: Great, thanks very much. Question: Who has spoken the sentence 5? (A) User (B) System
Output:
Answer: (B) System