When you leave the door open to lend value, it creates a longer and more trusting relationship with others. It makes people remember you, and it increases the probability a mutually beneficial event will happen in the future.
It’s simple and obvious, but not that many people do it. So when you do it, you really stick out.
It’s basic etiquette and it will make you happier and more successful.
So I’ll end by asking: How can I be helpful to you?