This document discusses key elements of customer service. It defines a customer as anyone who purchases goods or services, and defines service as helpful or professional work for others. It outlines what constitutes good customer service, such as satisfying customer needs and expectations, and bad customer service, such as not fully satisfying customer needs. It also lists different types of customer service and ways to keep customers, such as rewarding them, sending thank you cards, hiring mystery shoppers, having a great attitude, and giving customers what they want. The conclusion emphasizes that good customer service is about treating people well and communicating effectively.