How you define good customer?

That's easy, a customer who does not complain or moan about your service would be a good customer. But it also depends on what you are selling or the kind of service provided.

If you are into sales and a customer walks in to buy a product, then a purchase made by the individual would make him a customer. However if the same customer refers you to his friends and helps you get more business then he would be a good customer.

All this however depends on the service provided to him initially that initiates this cycle. So its good service, then good customers and good profit.

THE GOOD CUSTOMER ALWAYS WILLING TO KNOW ABOUT PRODUCT AND SERVICE.IF WE ARE SUCCESS TO TELL HIM ABOUT THE PRODUCT AND SERVICE THAT IS OUR GOOD CUSTOMER.HE SHOULD BE SATISFIED BY OUR ANSWER.

a good customer is that who appricate that product and after using that product give feedback about the product which is a most important thing.

Correct Answer is a good customer who gives maximum business to the Firm & pays promptly

A good customer is always patient, appreciate and response to the store clerk politely and well mannered. Always appreciate the good deeds do to him/her to the store or establishment the customer went to. 

Well, in my point of view a good customer is who rest cultured followed in particular area or store he/she is. Also, should Be patience in line,  Leave the store with a smile and wish the clerk a nice day.

Always be kind to store clerks, no matter how incompetent or rude you think they are. Put things back where you found them.