Consider the Airport Check-In and Security Screening. The system provides the following functions:

Actorsare Passenger, Tour Guides, Minor (Child), Passenger with Special Needs (e.g. with disabilities), all playingexternal rolesin relation to airport business.

Business use casesare Individual Check-In, Group Check-In (for groups of tourists), Security Screening, etc. - representing business functions or processes taking place in the airport and serving the needs of passengers. Business use cases Baggage Check-in and Baggage Handling extend Check-In use cases because passengers might have no luggage, so baggage check-in and handling are optional.

Draw a USE Case diagram.

Note: There are solutions available on the internet. Please do not copy-paste from there. I don't want those solutions