how can I ask more to the tower.

[marick626]

I have noticed.
you have a very limited selection of things you can ask the tower.

what if I have an emergency?

[Hyperion2]

Cross your fingers and change your pants.  Those are about the only other options you've got.

[wji]

Place your head between your knees and kiss you a*s goodbye.
bill
P.S. Have a nice day . . .

[ashaman]

More on the point, the default ATC is severely limited. This uncle Bill decided to dish out and unless you fly on-line or use Radar Contact... that's all folks.