Explanation:

Luggage: Custom activity table
An activity can be thought of as any action for which an entry can be made on a calendar. An activity has time dimensions (start time, stop time, due date, and duration) that help determine when the action occurred or will occur. Activities also contain data that helps determine what action the activity represents, for example, subject and description.
Passenger: Customer table
The account and contact tables in Microsoft Dataverse are essential for identifying and managing customers, selling products and services, and providing superior service to the customers. A customer address table is used to store address and shipping information for a customer.
Scenario: The company has a custom app for managing and tracking passenger luggage. The app uses Microsoft Dataverse.
Agents need to view which pieces of luggage match to each passenger, and then need to add the total on the passenger record.