Generally I don't. I try to be supportive of them, help them, take them into consideration when making decisions and just listen when they talk, but i seem to have almost non-existent drive to actually talk or ask about their day or interests, unless it's somehow going to effect my plans or routines in the future or they are under my responsibility.

Though it has obviously raised questions even in myself. Am i actually interested/caring/whatever towards this particular individual or just following social script or just doing it out of selfish desire not to feel bad.
Technically 99% of the people around me could be switched out in an instant and I'd go on like nothing happened, excluding the part where i would have to learn and memorize their behavioral patterns again.