Please draw the ER diagram of all entities and relations. (Don't send only article)

The mandatory requirement of the hotel management system: There must be separate user types. At least four user types: guest, administrator, receptionist, housekeeping. Only Administrators can create, delete or modify a room with its features Each room should have a unique name and may have different types (e.g., one bed, two bed, family-sized). Your design should allow us to create different rooms. Guests should be able to book rooms in any time frame for any amount of people depending on the availability of rooms. For example, the user can make a reservation for four people and he can book two double-bed rooms or one room for four people if it is available. Guests can check in if it is confirmed by a receptionist, and check out if they complete their payment. Note that they can make the payment in advance or while checking out. Receptionists can list the availability of the rooms in the system and the bookings requested by the guests. Receptionists can confirm room bookings or deny them according to booking requirements and available rooms. The same room should not be overbooked. That means during the customer's stay; there is no other reservation in that room. Administrators can cancel any booking they want if the user hasn't made any payment. Administrator accounts must already be present in the DB, or a DB Manager should only be able to add them - in other words, you cannot create an Administrator account from the end-points. Housekeeping can only view room availability but nothing about Guest information. Housekeeping is scheduled by Receptionists and kept as a schedule Housekeeping cleans the rooms after the bookings and keeps track of cleaned rooms. (Secret check: Only book clean rooms)