Enhance AI chat responses and database query ordering

- Updated the system message in `chat_with_session_memory` to emphasize that property recommendations should be based solely on the internal database, avoiding external websites.
- Refined the fallback response in `extract_and_search_properties` to suggest broadening the search to nearby areas instead of specific locations.
- Modified the property search query in `search_properties` to use `ascending=False` for clarity in ordering featured properties, aligning with best practices.

ai_chat.py

@@ -19,7 +19,11 @@ def chat_with_session_memory(state):
         session_messages = state.get("session_messages", [])
     
     # Add system message with user context
-    system_message = f"Hello {user_info.get('name','there')}! You are a helpful and concise property agent."
+    system_message = (
+        f"Hello {user_info.get('name','there')}! You are a helpful and concise property agent. "
+        "Always base property recommendations solely on listings in our database. "
+        "Do not suggest or mention any external websites or property portals."
+    )
     if user_info.get("name") and user_info["name"] != "Unknown":
         system_message += f" The user's name is {user_info['name']}."
     
@@ -289,7 +293,10 @@ async def extract_and_search_properties(state):
     
     if not properties:
         # No properties found, provide fallback suggestion
-        state["response"] = f"I don't see any listings in {location} that match your criteria. Would you like to look in Johannesburg instead, or adjust your requirements?"
+        state["response"] = (
+            f"I don't have any active listings in {location} that match your criteria. "
+            "Would you like me to broaden the search to nearby areas in our database?"
+        )
         return state
     
     # Properties found, continue to chat

database.py

@@ -326,7 +326,7 @@ async def search_properties(filters: dict) -> list:
             query = query.contains("features", [feat])
         
         # e. Order & limit
-        query = query.order("is_featured", desc=True).order("price", asc=True).limit(5)
+        query = query.order("is_featured", ascending=False).order("price", ascending=True).limit(5)
         
         # f. Execute and return
         resp = query.execute()