The program had to:

• Find the Purchase Order Service, notice what it needed as input.
• One was availability of the part, so find that service.
• One service took UPC, so find a conversion service.
• In the middle of planning, execute to find out if this
  company actually has this part available.
• Use semantics to note that Due Date and Delivery Date are the same.
• Notice that a PO number is needed and plan to generate the appropriate message back to the client.