2.1 What is the purpose of use-case diagrams? 2.2 Actor System 1. Sales clerk answers telephone and connects to a customer 2. Clerk verifies customer information 3. Clerk initiates the creation of a...

2.1 What is the purpose of use-case diagrams?
2.2 Actor System
1. Sales clerk answers telephone and connects to a customer
2. Clerk verifies customer information
3. Clerk initiates the creation of a new order
4. Customer requests an item to be added to the order
5. Clerk verifies the item (Checks availability)
6. Clerk adds item to the order
7. Repeat steps 4, 5, 6 until all items are added to the order
8. Customer indicates end of order, clerk enters end of order
9. Customer submits payment; clerk enters amount

3.1 Create a new order

5.1 Display item information
6.1 Add create an order item

8.1 Complete order
8.2 Compute totals
9.1 Verify payment
9.2 Create order transaction
9.2 Finalize order

Given the flow of activities described above, create an activity diagram.

Ensure you use the correct symbols.
2.3 Create a set of collaborating classes to implement the interaction shown above.