Below is a description of a modularised program. Draw a hierarchy chart that demonstrates the relationship between the various modules in this program.

"A hotel management system contains a module that will allow a user to login and authenticate themselves. Once authenticated, a user can apply for the dates of the booking. Booking applications are dealt with by a booking processing module. Users can also update their personal details, but any changes to an employee's details will trigger the user to reauthenticate themselves before the change is saved."