Question 70
A scheduling assistant must reschedule a customer's appointment; it has a new candidate time but has not checked availability. What is the correct control gate?
Explanation
Correct Answer
The proposed time is only a scheduling candidate until the relevant calendar reports current availability for the appointment duration and time zone. The host should read actual free/busy information, check affected attendees and the account's authority, then submit the scoped reschedule request. A separate provider receipt or readback is needed before the assistant claims the meeting moved. This sequence prevents an offered slot from being mistaken for an existing booking, while remaining subject to races that the calendar provider must handle when the write commits.
Incorrect Answers
A proposed appointment time is not a completed provider update. Informing a customer that rescheduling succeeded before checking availability and writing the change could cause them to miss the original reservation or arrive for an unbooked slot. The host needs the relevant calendar's current free/busy result, account authority and the update receipt. Only then can it describe the appointment as moved; before that, it should label the time as a candidate.
Sending the reschedule request before checking whether the proposed slot is free can create a conflict with an existing booking or attendee requirement. An apology after the fact does not reverse missed appointments or user confusion. Treat availability as a prerequisite and use the actual calendar service to check it before the update, then confirm the provider's resulting state. If no valid time is available, present alternatives instead of executing an optimistic mutation without the required check.
A recent cache snapshot may help suggest times, but it does not establish the calendar state at the moment of an actual rescheduling write. Another participant can book the slot during the cache window, and the original appointment may have been modified. The workflow should query authoritative availability for the proposed duration and timezone, then submit a scoped update and check its receipt. Cache validity alone is not proof of current free time.



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