You talk to people who serve you the food the same way you talk to the people you eat the food with. You talk to people who work for you the same way you talk to the people you work for. It's a one-size-fits-all proposition.
I can be alone without being lonely. In fact, those times of solitude are necessary respite for a beleaguered soul, set upon by the pressures of life. I need to take whatever moments I can to just be still.