"The customer is always right" is a common phrase that means that the customer's needs and wants should be the top priority for a business. It is often used to emphasize the importance of good customer service and maintaining positive relationships with customers. Here is an example of how this phrase might be used in a conversation:

Person 1: "I know you're busy, but I really need to speak with the manager. I'm not satisfied with the service I received today."

Person 2: "I understand. At our company, we always follow the principle that the customer is always right. I'll see if the manager is available to speak with you."