Optionally you can put an integrated online booking 'widget' on your website.
You can either embed it or link to it.
something like this:
(but you can customise colors, images, words, inventory)
This means your customers can make live enquiries about your availability, and even make bookings against your inventory.
Rental tickets that are made will automatically be sent to your back-office, meaning you only have one place to manage all your bookings, whether made by your staff your your customers directly.