|''begin transaction for client''| Joanna |''staff''| Bill|
|''rent''|100||cup|''for''|2|''weeks''|
|''pay with cash $''|210.00|
|''complete transaction''|

|''rentals for client''|Joanna|
|''rental item''|''count''|''start date''|''end date''|
|cup|100|2004/05/06 09:01|2004/05/20 09:01|

|''rental item subset''|
|''name''|''count''|
|cup|400|