I made already several apps with similar requirement as yours.
Relevant Skills and Experience
I am an experienced programmer/application developer. Payroll system, accounting, inventory, sales order system, are some of my projects that has been deployed and maintained. Im using vb6, vb.net.
Proposed Milestones
$50 USD - Upon completion of the project
I can create you a form for customers info with search functionality and buttons for adding, editing, deleting and the Customer Order form to enter ordered items by each customer. It can accept multiple items in one order proforma.
Should you need more info you can message me anytime at your convenience.