With much of the world — thanks to social media — appalled at United Airlines for having a passenger dragged off a Chicago-to-Louisville, Ky. flight, we’re reminded of the story of how an airline put one of its customers first:

Kerry Drake was flying from San Francisco to Lubbock, Texas, to visit his dying mother. The flight was delayed and he risked missing his connection — the last of the night. Drake sobbed in his seat, distraught at the thought of not seeing his mother one last time. Flight attendants noticed, consoled him and notified the pilot, who radioed ahead. When the plane landed, a gate agent was poised: “Mr. Drake, we’ve been expecting you.” Airline employees held the connecting flight, despite the imperative to operate on-time, and Drake got to his mother’s bedside in time.

That well-documented event happened in 2013, and the airline was ... United. So in extraordinary circumstances, employees of any airline can rise to the occasion, treating passengers with respect and kindness, not as chattel. The difference is individual initiative. Whatever motivated United personnel to show compassion to Drake was fully lacking Sunday at O’Hare International Airport, where employees thought only of the need to bump four passengers at random to make room for crew members who needed to get to Louisville. When one man refused to give up his seat, he was told, in effect, “get out or else,” and then was roughed up and hauled away by Chicago aviation officers. It was an unconscionable act of violence in “the friendly skies” — captured on smartphones.

If only United’s employees had made a different decision: to offer more than $800 or $1,000 (accounts vary) in compensation, which passengers didn’t think was enough. Or tell the four employees to drive south. Or get creative and offer four passengers a fancy limo ride to Louisville, plus tickets to “Hamilton.” Anything!

Because employees under pressure risk making terrible decisions that alienate customers, companies prioritize customer service and invest heavily in training. The best companies work hard at teaching workers to be positive and thoughtful problem-solvers. When Starbucks in 2008 was going through a period of sloppiness, CEO Howard Schultz shut down his coffee shops for three hours of training, then rebooted with a splashy promise that every barista would make every drink perfect or “make it right.”

United, by contrast, seemed lost after its disastrous blunder. CEO Oscar Munoz bungled several apologies, making United an international target of scorn, before he finally sounded the right note of contrition Tuesday, declaring, “No one should ever be mistreated this way.”

When Munoz was new on the job in 2015, he visited the Chicago Tribune Editorial Board and vowed to do better by everyone, and we believed him.

This will go down in business history as one of the worst-ever customer service experiences. To retrain employees and appease angry customers, Munoz may have to do something as dramatic as the Starbucks shutdown-and-reboot. There are plenty of airlines out there. United has given many flyers an incentive to try them.