revise what stored in conversation history

chatbot_simulator.py

@@ -149,6 +149,7 @@ Example Output Format:
 
         self.conversation.append({"role": "assistant", "content": update_prompt})
         updated_state = self._get_openai_response(self.conversation)
+        self.conversation.pop(-1)
 
         # Parse and update the user state
         updated_state = json_repair.loads(updated_state)