|''begin transaction for client''| Joanna |''staff''| Bill | |''book''|1||Truck|''on''|2004/05/08 09:01|''for''|2 days| * Actions |''begin transaction for client''| Bob |''staff''| Bill | |'''reject'''|''book''|1||Truck|''on''|2004/05/08 07:01|''for''|1 days| |''complete transaction''| |''resume transaction for client''| Joanna | |''pay with cash $''|4000.00| |''complete transaction''| * Checks |''client booking list''|Joanna| |''rental item''|''count''|''start date''|''end date''| |Truck|1|2004/05/08 09:01|2004/05/10 09:01| |''rental item subset''| |''name''|''free count''| |Truck|1|