To add a contact us form on this page, install and enable the Contact Us Form Addon in the admin panel:
Addons > Manage Addons
You can change the text for this page by accessing the following menu in the admin panel:
Design > Templates > main_page > extra_pages
Thank you for taking the time to visit our site. Please use the data in the contact info section to contact us if you have any questions or suggestions regarding our site. We will respond to your inquiry as soon as we can. We appreciate your business. Have a great day!