You would be surprised by how nice and accommodating people become when you smile at them, courteously ask them, “How are you?”, or open a door for them. I can think of countless times when I’ve been courteous to people and, in return, they went out of their way to help me. I’ve received discounts, promotions, upgrades, and return smiles. It’s well worth the cost of a smile or a thank you. Make a practice of being courteously mindful of those you meet. Not only does it pay but it’s the right thing to do.