---- * Given:
|''begin delivery transaction for client''| Joanna |''staff''| Bill|
|''book''|2||coffee dispenser|''on''|2005/05/08 09:01|''for''|2 hours|
|''book''|2||coffee dispenser|''on''|2005/05/09 09:01|''for''|2 hours|
|''pay with cash $''|28.36|
|''complete transaction''|

---- * Checks
|''deliveries for client''| Joanna |
|''date''|''city''|''zone''|''delivery address''|''item''|''item count''|
|2005/05/08 09:01|Auckland|CBD|10 Princes St|coffee dispenser|2|
|2005/05/09 09:01|Auckland|CBD|10 Princes St|coffee dispenser|2|

|''client booking list''|Joanna|
|''rental item''|''count''|''start date''|''end date''|
|coffee dispenser|2|2005/05/08 09:01|2005/05/08 11:01|
|coffee dispenser|2|2005/05/09 09:01|2005/05/09 11:01|
---- * Actions
|''time is now''|2005/05/07 09:02|

|''begin transaction for client''| Joanna |''staff''| Bill|
|''cancel booking of''|2||coffee dispenser|''on''|2005/05/08 09:01|''for''|2 hours|
|''refund cash $''|14.18|
|''complete transaction''|

---- * Checks
If all the bookings in a delivery is cancelled, the delivery should be cancelled as well.
|''deliveries for client''| Joanna |
|''date''|''city''|''zone''|''delivery address''|''item''|''item count''|
|2005/05/09 09:01|Auckland|CBD|10 Princes St|coffee dispenser|2|

|''client booking list''|Joanna|
|''rental item''|''count''|''start date''|''end date''|
|coffee dispenser|2|2005/05/09 09:01|2005/05/09 11:01|