Walk in.
Sit down.
Look at a menu.
Pick something you would like.
Smile.
Get a returned smile.
Wait.
Someone puts food on your table.
You say "thank you" with a smile.
You eat the food.
You burp.
You signal for the check.
You pay the full amount of the check with about 15% more for the tip.
You stand up.
You leave.