pawasdmd on "Redirect After Visitor Clicks on The Submit button?"

I am using Avada theme. To measure conversions want the visitors to be redirected to a thank you page after they click on the submit button? How do I do that? Should I dump the themes contact form and try other contact plugins? It would be great if I could just manage to do it with the themes contact form that I am using.

http://www.ncmborz.com/contact-us/

Is there a better way of tracking conversions?