Hi hope you are doing well
I have read the description and find out the following requirements.
** Calender on website
1. Kindly give link of your website?
2. Yes have developed a Courier booking system website, But it have no calender integration.
I have completed many successful projects with Wordpress, Joomla, HTML5, PHP, Java, SQL, ASP, JavaScript, Ajax, JQuery and CSS3.
kindly chat for details.
Best Regards