Draw an activity diagram for the main success scenario for the check out guest use case.
Examine each of the activities in the check in guest activity diagram shown in Figure 11 (reproduced below) and identify any exceptions, if any.
We identified the following exceptions.
Look up reservation: there may not be a reservation corresponding to the stated reservation number.
Allocate room: a room of the required type may not be available.
Issue key: the key may be lost!