Build a simple Hotel Room Occupancy Application using Python, that will be used by the Manager at the hotel reception.

The application should provide the facility to:

List out the rooms that are vacant and available for allotment.

Allot a room to a new customer.

Update the number of days the customer wants to stay on the room $$ i$.$e$.,$ in case there is a change.

Display the list of occupied rooms along with the customer name.

Checkout a customer i$.$e$.,$ make the room available for allotment.

Write the latest data into an excel file.

Quit the application