URL parameter to restart the booking page

How do I force the Cogsworth booking page to clear state and not remember where the user was

Cogsworth remembers the user state of the booking page, so if you or your customer started the booking process then got distracted or navigated away, then came back, your Cogsworth booking form would be waiting for you in the same state as it was when you left it.

Sometimes, you do not want this to happen and if you append the parameter ?reset=true to the end of your URL, it will restart fresh every time.

E.g. http://cogsworth.com/book/cogsworth?reset=true