<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by LHR/MEL/Europe FF:
If intending to fly QF, then you can use their on-line rewards booking engine which will suggest flights on certain days. You then call Qualiflyer with these dates and you should be ok.</font>
With CX, you can register with AsiaMiles and then use the CX booking engine. Helps quite a bit because calling Qualiflyer repeatedly would be a pain.