
Ya'll might want to add examples capturings the following cases:
1. User already has a scheduled date.
schedule 1 sn/appointment st/16:00
2. What if we add a command to schedule at the same time that already exists.
Condition: the existing schedule is also at 4pm.
schedule 1 sn/appointment sd/2024-10-22 st/16:00
3.What if the schedule date is not specified.
schedule 1 sn/appointment st/16:00