How about I work hard and help the waitresses do their side work?
That would be great. Why help the waitresses?
Because I feel happy to help other people
You're so nice. It's great that you like to help people. It's a desirable characteristic.
I appreciate that. I really just try to be the type of person I want other people to be.
I like seeing people help each other out. It is a good thing to help your co-workers out and they will be more willing to help you out in the future too.