!3 ''Rental of cups for 2 weeks:''
|''begin transaction for client''| Joanna |''staff''| Bill|
|''rent''|100||cup|''for''|2 weeks|
|''pay with cash $''|410.00|
|''complete transaction''|
 * ''Checks''
|''rentals of 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''|''free count''|
|cup|400|