WordPress is a free program that you can use as a CMS.

Content Management Systems allow you to edit any page on your website or to add new pages at any time.

This booking system can easily be incorporated into WordPress allowing you to edit almost every part of it easily.

I can also convert your existing website to use WordPress, this would allow you to easily edit any page of your site at any time.

The cost of converting your website to be editable would vary on the size of your site, please contact me for a quote.

Note: WordPress is free I would only be charging for my time.