Flew from Goa to New Delhi in an Air Asia Plane

While boarding a plane or a train or even a bus, have you ever thought of getting a Window Seat? 
Just about everyone wants one for sure. While if you have luxury of time which you get when you book travel tickets earlier - you can get window seats pretty easily, it's a bit tricky when you are flying. 
Reason being most of the good seats are already gone - thanks to e-check ins and the leftovers are either in middle ones or they face aisle.