The controller then asked the crew to climb, to which the first officer replied, "No, sir, we're running out of fuel."

After that pilot can give, or the controller can ask for, additional information, such as, fuel and number of passengers on board.

You're dialing the phone when your controller sticks his head in the door and asks if you have a minute.

Instead, the controller asks if the plane can turn left or right for a previously discussed circle to lose altitude.

The controller continued to try to contact United 93, and asked whether the pilot could confirm that he had been hijacked.

When controllers asked for confirmation he replied "not yet".

The controller acknowledged the call and asked, "How long can you hold and what is your alternate?"

The controller asked the aircraft to "say again your alternate airport."

During this period, the controller asks at least two other aircraft whether they are the ones that have taken up positions on the same runway.

The controller asked whether everything was all right; the pilots confirmed that it was.