Create a decision tree for a customer placing an order using the MRE ecommerce site.

Activities include:

1. Is the customer new?

2. If the customer is new, add the customer.

3. Does each item have the quantity available to ship to the customer?

4. If not, write a back ordered item record and display a message.

5. Display a confirmation page and have the customer confirm the order.

6. If they cancel, leave the items in the shopping cart.

7. If they confirm the order, send the credit card company a charge transaction.

8. If the credit card company rejects the charge, notify the customer