An airline customer service department needs to notify passengers when a flight is delayed.

A SMART goal mission statement for the airline customer service department would be: "Notify passengers via text message within 15 minutes of flight delays." SMART goals are specific, measurable, achievable, relevant, and time-bound. This statement clearly defines the action (notify passengers), the method (via text message), the timeframe (within 15 minutes), and the purpose (informing passengers of delays). This approach ensures that the goal is clear and actionable, providing a concrete target for the customer service department to achieve.