[Asterisk-Users] call back on failed transfer or dial?

[shabanip]

hi,
i'm under the impression that this feature is not available in asterisk, 
consider this scenario:
-  you are the operator. you answer a call from outside and you want to
transfer it to one of the extensions. after you transfer, if the person
you transferred the call to, doesn't pick up or if his line is busy, the
call is transfered back to you, you can speak to the caller and tell
him, for example, that the person you want to talk to is not in, and ask
if he would like to talk to leave a message or talk to another person
instead.  now in asterisk, it seems to me that after you transfer a call
to an extension, there's no way to have the caller transfered back to
yourself if the called extension doesn't answer or if it's busy. is this
correct?

thanks,
- shabanip