When I worked for the government, there were certain plugger-types who had the following sign hanging up in their work area:
I can only please one person a day.
Today is not your day.
Tomorrow is not looking good either.
I hated those signs. I remembered thinking that anyone displaying one ought to be fired on the spot. I remember thinking that the statement that was being made was that the worker didn't give a shit about customer service, and stereotypically, the displayer being a low level bureaucrat, poor service is expected, sign or no sign. That is almost axiomatic.
Looking back on it, maybe I misunderstood the statement. Aren't such signs posted out of frustration? Posted out of a sense of futility? Almost no one who has business at the clerk of courts office or the BMV is ever happy to be there, no matter how smoothly it goes. So no matter what the workers do, no one is really happy about how they went about doing it. The workers know that. And they are just being candid about. It is very possible that some days, most days even, no one is pleased. Being able to please even one person a day might be unduly and irrationally optimistic.