A recent turn in my mother’s health put me on the road and gave me a chance to see some interesting approaches to service quality. On the first leg of my trip, I stopped at a roadside diner to grab a quick bite. The hostess greeted me with a smile and, pointing toward a nearby table, asked if it would be OK. She did not move until I said yes, and then pulled out the chair for me to sit down. The service was otherwise like any other diner, but the welcome secured a hefty tip.