an embarrassing moment

I am driving a rental car wile mine is being repaired and today I decided to put gas in it.  I drove up to a pump at my favorite gas station, having remembered to check which side of the car needed to be near the pump, only to discover that I didn't know how to open the flap covering the gas cap.  In my good old car I just stick a finger in the little space provided and flip the cover open.  Not so with this car.  I have had cars in the past that had an internal switch to open the flap so I am familiar with the concept but, sitting at the pump, I could not find the switch, and, more frustration, there was no manual in the car. Now this is why this is my favorite gas station and I will drive out of my way to get my gas there (it's the Shell station near the Kroger on Dupont, in case you're wondering).  I walked into the store, explained my dilemma to the young lady behind the counter, and she immediately said "Sure, I can help you with that" and came with me to my car, searched a little, found the switch and opened the flap for me. No laughter, no eye roll, no sheesh what a dumb lady, just polite, good humored service. Thank you! I will be back (but next time with my own car).