[Asterisk-Users] timeout

[Altus Snyman]

Good day all
I have my extensions.conf configured so that it waits 8s the answers 
with a message saying press 1 for... and 2 for..
How do I tell it then that if the did not press anything to should go to 
the operator.
And/Or if they did not press something it will play the message again
And/Or if they typed a wrong extension ti will read the menu again
please let me know
Thaks
Altus