“And how they treat people in the service sector, like waiters, housekeepers, laborers, etc.” —-u/-red “If they speak ill of other people behind their backs, chances are, they are doing the same thing to you.” —u/manjimanji “Also, how they respond when they’re at the airport and their flight is delayed or canceled. How they treat a gate agent or other airline staff tells all.” —u/Erik5943