I’ve got 3 I hope I helped you
The first is : "Excuse me, miss, but I was raised to respect my elders, and I can't help but feel that you have a wisdom and grace beyond your years."
The second one is: "They say that age is just a number, but in your case, it's a number that demands respect. May I have the honor of buying you a drink?"
And the last one is : "Pardon me, sir, but I couldn't help but notice the way you carry yourself with such dignity and poise. It's clear that you've lived a life worth respecting, and I'd love to hear more about your experiences over dinner."
I hope I helped