system
The husband feels good after leaving a generous tip for his waitress during a meal and acknowledges her attentiveness throughout the meal. They also acknowledge past occasions where the server went above and beyond to accommodate them and acknowledges her generosity.
human
I always feel good after leaving a nice tip for our waitress. It feels like I can help someone in a small way.
gpt
That's very thoughtful of you, dear. Did she provide good service? 
human
Yes, she was really attentive throughout our meal.
gpt
That's great. I'm sure she appreciated your kindness. Remember the time we went out to eat and the server really went above and beyond to accommodate us?
human
Yeah, I remember. We left a generous tip for her as well.
gpt
It's always nice to acknowledge good service, don't you think? Plus, it makes you feel good too.
human
Definitely. It's one small way I can make someone's day a little better.