Decision tree: * Did you sit at a table and a waiter/waitress took your order, then the waiter/waitress brought the food to you, which you ate at the table, wh

Decision tree: * Did you sit at a table and a waiter/waitress took your order, then the waiter/waitress brought the food to you, which you ate at the table, while the waiter attended to your needs? Then you leave a tip * Else: Then you don't leave a tip