overtime.py

def makeInt(strVal):
	try:
		return int(strVal)
	except ValueError:
		return None

def main():
	print("Welcome, let's find out if you are due overtime for your work")

	NoCount = 0
	UserName = ""
	HoursWorked = None

	while (UserName == ""):
		UserName = str(input("Hello, can I have your name please?: "))

		if (UserName.upper() == "NO" or UserName.upper() == "N"):
			NoCount += 1

			if (NoCount >= 3):
				print("Fine. I'll just leave it.")

				return;
			else:
				print("That's quite rude, I really do need your name though.")
				UserName = ""

	while (HoursWorked is None):
		HoursWorked = makeInt(input("Please tell me how many hours you have worked: "))

		if (HoursWorked is None):
			print("Huh, didn't quite catch that, can you enter a number?")

	if (HoursWorked > 40):
		print("%s, I am pleased to tell you that you are due overtime" % UserName)
	else:
		print("I'm sorry %s, You are not due overtime." % UserName)

main()