Update chat_handler.py

chat_handler.py

@@ -399,11 +399,33 @@ def _process_parameters(session: Session, intent_config, raw: str) -> bool:
     except json.JSONDecodeError as e:
         log(f"❌ JSON parsing error: {e}")
         log(f"❌ Failed to parse: {raw[:200]}")
+        
+        # Fallback: Try to extract simple values from user input
+        # This is especially useful for single parameter responses
+        if session.state == "await_param" and len(session.awaiting_parameters) > 0:
+            # Get the first missing parameter
+            first_missing = session.awaiting_parameters[0]
+            param_config = next(
+                (p for p in intent_config.parameters if p.name == first_missing),
+                None
+            )
+            
+            if param_config and session.chat_history:
+                # Get the last user input
+                last_user_input = session.chat_history[-1].get("content", "").strip()
+                
+                # For simple inputs like city names, try direct assignment
+                if param_config.type in ["str", "string"] and len(last_user_input.split()) <= 3:
+                    if validate(last_user_input, param_config):
+                        session.variables[param_config.variable_name] = last_user_input
+                        log(f"✅ Fallback extraction: {first_missing}={last_user_input}")
+                        return True
+        
         return False
     except Exception as e:
         log(f"❌ Parameter processing error: {e}")
         return False
-
+        
 # ─────────────────────────  API EXECUTION ───────────────────────── #
 async def _execute_api_call(session: Session, intent_config) -> str:
     """Execute API call and return humanized response"""