My deliberate thanks to both of you..
Actually I feel comfortable with urdu in the sense I can handle any sort of argument in Urdu and can handle interviewers in much more confident way.

In my current job I went with Urdu with which I and Interviewer both were satisfied and my interview took 45 minutes finally fetching a career for me...
I do have command over all other issues, have 10 months demonstrable experience in procurement/stores in govt sector.

As far as leave is concerned actually I have already availed 10 day leave this month and in the coming month I am going to take MA Exam so I again be on leave. That's the only reason of my asking about interview dates.

Thanks to you people for such a commendable feedback..