enhance meeting availability response format for better readability

src/services/_meeting_service.py

@@ -84,8 +84,13 @@ class MeetingService:
                 )
 
             if available_slots:
+                final_response += "Please use the following table to present the data in a better way:\n"
+                final_response += f"Timezone: {timezone}\n"
+                final_response += "Available slots:\n"
+                final_response += "-----------------------------\n"
                 for slot in available_slots:
                     final_response += f"{slot['start']}\n"
+                final_response += "-----------------------------\n"
             else:
                 final_response += "No availability found for this duration.\n"
         return final_response