Right now that's not possible with views.
It's however possible to create/customize a 404 page.
1) Check first if your theme's folder already provides a 404.php file
If such file is available WordPress will automatically use that page if a Page Not Found error occurs.
Feel free to customize the current error message to your needs by editing the file.
2) If your theme does not provide a 404.php file
Create one yourself or ask the theme owner to provide one for the theme.
You can find more info below.