Hi,

You can easily do this with the Contact Form 7 plugin 🙂 We’ve used that as well for the contact page in our demo. You can download it for free here: http://wordpress.org/extend/plugins/contact-form-7/

Once you’ve set up the form you need to copy/paste the shortcode the plugin gives you on your reservation page. After that your form will be visible 🙂

Hope this helps!