8:13 am, they know the air plane is being highjacked, an no one did a thing?! Nothing?! That is was is so insane about the whole thing, they know and they do nothing.

Let's suppose the conversations are real and there were people on the plane whose job was to make sure the plane got to its target. It still does not discount the possibility that their role was make sure the pilots did not let the control tower know that the plane had been take over remotely and that their job was to stop the pilots from taking actions that would prevent the planes from reaching and hitting the target does it?

In any event; how could the control tower talk to passengers? If you believe they can then perhaps next time you fly try telling the cabin crew that you want to have a quick word with the control tower about .....whatever you want just to see if you can.