Booking System Devloper

We need someone to create a booking system for a tourism website.

The aim will be to allow the booking of tours by the hour, day, number of people, or any other metric we need.

The system needs to be modular so that if we have a new type of tour that is priced according to a different metric, we can easily append it to the existing system in a logical manner.

This is a full time project until completed and then there will be part time maintenance duties once the project is live.

The booking system should be easily integrated with wordpress and ideally have an associated plugin we can access from the wordpress CMS (although this is not essential)