1. (more formal) Would you mind... [opening the window]? 2. Could you please... [turn off the lights]? 3. (informal) Can you... [pass me the chicken]? 4. Please... [send me the information]. 5. I'd appreciate it if you could... [wash the dishes].
Having the window open allows a passenger to see what s going on outside in a split second and it s not only because the window is opened. Say imagine if the plane crashes and the windows then just automatically open on its own leading way to a ray of bright sunlight coming into the passenger cabin. For a few seconds, all the passengers inside won t be able to see anything outside until their eyes adjust to the bright sunlight outside. That few seconds in the case of an emergency is crucial.