"One more thing"
Clients will inevitably take advantage of that statement, assuming that your job as a service is to serve their every request.
Many customers will abuse it too…asking (obnoxiously) for more than their fair share.
At the same time:
Mediocre businesses treat it as something to be avoided. It aggrevates them that people would expect more than their worth. In fact, they often work overtime to find ways around encouraging this kind of behavior.
And great businesses? Great organizations flip the script and treat it as an opportunity.
Consciously looking for ways to add “one more thing” to your output is a reliable way to create a surplus of value. And consistently delivering more that what’s expected is a great way to delight your clients, get talked about, and scale.
“Is there anything else I can do for you today?” is a posture worth leaning into, because it enables you to create the kind of reputation that allows you to pick and choose your customers.