I need a confirmation box added to existing code

We need to change the functionality of this code (https://codepen.io/anon/pen/BEXZYR) to whereupon clicking "Get Started", a user is shown a box that displays terms and conditions (sample text is fine for the time being in place of T&C), with the option for the user to Accept or Reject the terms. Upon accepting, the process needs to proceed to the checkout page. Upon rejecting, they should remain on the pricing page.

Additional opportunities will likely come after this project.

Servicebot Documentation may be helpful in scoping out this project: https://docs.servicebot.io/embed/#example-pricing-page-config