Integrity
Situation: When you do not trust the customer’s intentions or think that he may be mistaken.
Solution: Ask the customer to write or allow you to write down, what he said. This can be used as confirmation of what the customer asked you to do.
Example: The customer comes to collect his ticket, but he claims the fare is $50 more than he remembers. In this case, conformation, whether or on the computer screen, is essential.