#if the user pays less than is owed, tell them how much they still owe, and input it
if cash < total:
    print "You still owe me ",total - cash
    cash = input("Amount Paid: ")
total = total + cash
print "Thank you."

#if the user pays more than is owed, give them change
elif cash > total:
    print "Thank you. Your change is ",cash - total
    
#if the user pays exactly the right amount, tell them they are owed no change
elif cash == total:
    print "Thank you. You are owed no change"