Unless you have trained and reliable people available to you on a daily basis, you will probably not be able to offer same day service. As you get busier, and your schedule fills up, you might not be able to get somewhere for a week - maybe more. However, this tells the customer that you are in demand, and they will realize you are worth waiting for. Carpet cleaning is not emergency surgery. It's more like elective surgery, and can be scheduled at everyone's convenience.