How to Reschedule a Meeting with Sarra

Reply to the meeting's email thread asking to move it, "can we push this to Thursday?" is enough. Sarra checks current availability, proposes new options on the same thread, and once a time is agreed updates the original calendar event in place so nobody loses the invite. Everyone on the thread is told the new time.

Ask in the thread; Sarra re-proposes and updates the existing event in place.