Final answer:
If you miss the assigned void time, you need to cancel the flight and reschedule for a new time.
Step-by-step explanation:
If you did not take off after the void time, you must cancel the flight and reschedule for a new time. The void time is the pre-assigned time slot for departure, and if you miss it, you will need to contact air traffic control to request a new void time. Continuing to wait or proceeding with the flight as planned would not be the appropriate actions in this situation.
It is important to adhere to the assigned void time to maintain efficient air traffic control operations and ensure the safety of all aircraft involved.