Develop an activity diagram for the following scenario.

A contractor buys materials by taking them to the checkout desk for contractors. The clerk enters the contractors name into the system. The system displays the contractors information, including current credit standing. The clerk then opens up a new ticket (sale) for the contractor. Next, the clerk scans in each item to be purchased. The system finds the price of the item and adds the item to the ticket. At the end of the purchase, the clerk indicates the end of the sale. The system compares the total amount against the contractors current credit limit and, if it is acceptable, finalizes the sale. The system creates an electronic ticket for the items, and the contractors credit limit is reduced by the amount of the sale. Some contractors like to keep a record of their purchases, so they request that ticket details be printed. Others arent interested in a printout