Above you can find a simplified version of the Office Coffee Flowchart from PhDComics. Let's practice Boolean logic by encoding this flow chart into a function called coffee$\_$chart.

Specifically, we'll use three Boolean variables taking the value True $($ yes$)$ or False $($ no$)$:

last$\_$cup: whether the person drank the last cup of coffee terrible: whether the person is terrible know$\_$how: whether the person knows how to make coffee

And, we'll create a variable called message containing the message which will be returned by the program. Using nested if$-$else statements, your task is to ensure that message is assigned to the appropriate one of these four values: "Carry on and be productive." "Make coffee." "You can figure it out. We believe in you." "Well, at least you're aware of it$.$ You can still change!"