Can you describe a time when you provided excellent customer service?

Thanks for invitation,

As a matter of fact, to satisfy the customer needs, it depends on lot of factors, for example:

1- The customer's expectations.

2- His mode.

3- The service which is requested.

4- Availability of the service at that time.

5- The customer service officer experience. 

6- The customer service officer mode.

7- .......etc.