Smartphone application for delivery

I want to make an application for smartphones that makes delivery of goods very easy, cheap and accessible to everyone. Whether you want to make extra money as a carrier by delivering things such as food, clothing, furniture on your way home, on several destinations, or as a receipeint and you need something from one side of the town to the other, fast and conveniently you can try the app. Delivery is sometimes unreasonably expensive and there are opportunities for everyone to help each other. This is how it works: the recipient will make a delivery-offer for a certain item(s) and the available carriers will accept or deny the offer based on their availability or willingness.