Abstract: Components are displayed on a customer computer, each component having an attribute. A component is selected on a display by a customer. The information for the attribute for each selected component is manipulated by the customer. The manipulated attribute information for each selected component is transmitted to a server. Available travel packages are calculated, each available travel package including available components representing an inventory manipulated by a seller in real-time. The calculated different travel packages are simultaneously displayed on the customer computer. The available component from each different available travel package is selected on the display. A final travel package is created by assembling the selected available components from each different available travel package. A reservation of the created final travel package is requested by the customer. A confirmation that the final travel package is reserved for the customer is generated and transmitted to the customer computer.