Not anymore - AI has made a baby step in technology.

I am guessing from your home base you reside in India so here is the link for online registration - you get your FR Number instantly. Be warned though they can take forever to credit flights, especially from overseas stations so keep your boarding passes with you till flight credits.
Ratio's aren't great - but as everyone said seats are fairly easy to get.

https://www.flyingreturns.co.in/myac...l.php?prog=ind