Perishability

Perishabilty: A characteristicof a service: it cannot be stored for use in the future.

The ability to purchase a plane ticket can only be satisfied when the services provided have met the needs of the demand. The services provided by Delta are perishable in a sense that had there been no unoccupied seats, the customer would have been faced with the decision to switch airline carriers or choose a different date. Thus, making the service perishable because of the availability of seats only being offered at a specific time.