|''begin transaction for client''| Joanna |''staff''| Bill |
|''rent''|1||Truck|''for''|1 day|
|''modify amount on rent''|1||Truck|''for''|1 day|''to''|2|
|''pay with cash $''|4000.00|
|''complete transaction''|

|''rental item subset''|
|''name''|''free count''|
|Truck|0|