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: I want to find a moderately priced restaurant in the west part of town. What is the address? Sentence2: Thank you. Goodbye. Sentence3: You're welcome. Have a good day! Sentence4: Meghna is in the west part of town and in the moderate price range. Their address is 205 Victoria road, Chesterton. Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System