What is the best criteria to define the best customer service?

best customer service philosophy i believe in it 

" LISTEN, try to help"

meeting and satisfying customer needs , leaving your customers with the best impression. Displaying professionalism

Customer Satisfaction is the criteria that encompasses all the aspects of business 

Providing the best quality of services in a pleasant humble and a respected manner. Always be professional and do your best for a wow experience for your loyal customers. 

Stay positive, put yourself in the guest's shoes and use the L.A.S.T. method 

In today's World , There is no best Customer Service as with competition everyone is trying to provide best to the best.

But i feel satidfying the needs of the customer is best service. 

Listening attentively providing the best quality information  service in a pleasant humble and proffesional manner 

BEING A LISTENER. To personalize service, you have to listen to your client's words, analyze their body language (for what they are saying without using words), and overall behavior monitored by maintaining excellent relationships with them. The only way to give great customer service that is PERSONALIZED is by giving a client WHAT THEY WANT - customized.

I think listening is not always THE key. Sometimes, you have to handle the situation with strength, otherwise the risk is listening for hours to complaining which is not really helpful to solve the problem. So, of course you should listen; then pick the elements you need and decide the direction you should go for.

Customer service has many faces to it, BUT, mostly it refers to superior service. When you deliver superior service, it immediately shows, not only you know your work, but you have high standards that you work accordingly to.

Your delivering of superior service showcases who you are in the Industry.

A PERSON THAT CARES, and shows through his/her actions.

Good Listener solves a lot of problems. The Other one is prompt problem solver.