WooCommerce book now

I need to know the correct way to bypass the Woo Commerce booking system and use an external booking software link? So still keeping the current tour layout and when BOOK NOW is clicked it redirects to an external booking software link to acomodate for double bookings and availability. Also I want to remove the side bar completely on certain tours that only book via PHONE?

E.g I have multiple tours from multiple companys – that all use different payment methods (phone bookings only, external payment software such as REZDY, some only take email bookings, etc) and each individual tour needs to accomodate for these.

Thanks