//Use the Façade Pattern.

//The Runner class creates an instance of the Façade class (object) and invokes the IsEligible() method.
string customerID = "ABN000726351";
Facade systemFacade = new Facade();

bool eligible = systemFacade.IsEligible(customerID, 120000);
Console.WriteLine("\n{0} has been {1}.", customerID, eligible ? "Approved" : "Rejected");