Customer: “Hi Matt. Do you sell ____?”
Me: “No, we do not sell ____.”
Customer: “But, I really can only use ____, not the one you have now.”
At this point, I’m given a choice.
Fill in the blank, or, risk losing the customer.
It’s possible the customer will shop for everything elsewhere after this.
It’s also possible, if I can fill in the blank, that they will never shop anywhere else.