Avoiding Page Reload Upon Selecting A Service

Howdy,

Is it possible to have the whole page not reload when selecting a service and clicking "show available times" button?
Clicking on different days on the calendar generates the available appointments without a page reload, so I'm not sure why the whole page is being reloaded when choosing a service.

Page: http://m40.siteground.biz/~heartcor/asheida.com/voice-lessons/

Cheers,
Casper