Have one more question.. and didn't want to start a new thread..

I am heading to DEL this weekend.. and will be purchasing my tickets + airpass.

here is how i plan to book my flight.

DEL-DXB : 4th December
DXB-DEL : Furthest date possible.

Once I reach DXB on the 4th of December.. is it required of me to immediately go to my next destination? For example, Cairo? Or can I make the Cairo booking for January/February?