The Free Taxi

I pulled off a nice surprise on Rupa (classmate at IIT-B) who came over
from Bombay this weekend. Rups had given me the flight details but he
wasn't expecting me to pick him up from the airport. As I saw him coming
into the arrival lounge, I hid behind a pillar.
A taxi driver swoops down on Rupa: "Sir, Taxi?"
Rupa (busy punching some number on his mobile): "Nahi"
I move in from behind: "Sir, Taxi chahiye kya?"
Rupa (again without looking up): "Nahi. Katao."
Me (expecting Rupa to look up this time): "Sir free taxi hai."
Rupa (yet again doesn't look to see who is offering a free ride): "Nahi
chahiye."
Me (sure he'll look this time): "Sir apko Binu se milna jana hai na?"
Rupa (finally looks up bewildered): "Abbe!?"