public bool orderItem(string bookID, string userID)
{
Connect();
Trace.WriteLine($"Connecting to Bank and Bookstore.");
bookstore.ListAvailableItems();
double amount = bookstore.GetItemPrice(bookID);
Trace.WriteLine($"Book costs {amount}");
bank.ListClients();
bank.EnlistMoneyTranfer(userID, amount);
Trace.WriteLine($"Money transefer completed.");
bookstore.EnlistPurchase(bookID, 1);
Trace.WriteLine($"Book is purchased.");
return(true);
}