The WordPress Course Booker Plugin has already been developed and the project was nearly completed. Unfortunately the Company developing the plugin decided to close their company and didn't complete the project.
The plugin just requires some front end cosmetic/functionality changes, the backend automatic email reminders needs word doc/pdf attachment, which already upload from wp-admin side. SMS text message integration is required for reminder SMS text messages.
Then my client just needs to review the wp-admin side and provide me with his suggestions/feedback/changes.
This project is urgent and requires immediate start with the aim to finish in a few days.