Clear Contents & Change Color Of Cells

how to clear contents and change colour index of cells.

This is for a booking system. The current VB codes allows bookings to be made by entering a reference number, dates of bookings and room type and bed type. When the VB codes are executed, the cells corresponding to the details entered earlier, would fill the booking table with the reference number and change the colour fill (e.g. yellow) to indicate that the slots are booked. Please refer to attached sample.

However, I do not know how to delete the booking. I would like to assign a cell for user to enter the reference number that needs to be deleted. So when the reference number is entered into that cell, user could execute a function which will clear the contents and change the colour index to none for that particular booking with that reference number(s).

Attached is a sample of the problem.