Apprentice Dairy Queen

You're the Apprentice to a Dairy Queen, and you're job is to make money! Up to 3 customers can come in at a time, and request specific orders. Pay attention, though, as the order they want their treat is very necessary to make the money and the sale. If it's not done in time, the customer will leave and may not come back. You'll have a goal to hit in a certain time, so give it your best!