 chat system.';
            } else if (message.toLowerCase().includes('status')) {
              response =
                'Your account status is: Active. Premium subscription valid until 2025-12-31.';
            } else if (message.toLowerCase().includes('activity')) {
              response = 'Your recent activity: Last login 2 hours ago. 5 conversations today.';
            } else if (message.toLowerCase().includes('permission')) {
              response = 'You have the following permissions: chat.read