"kindly sanction to me leanve on 30/11/2009"
What is wrong?
Remember to start your sentences with a capital letter and check your spelling. Also, there is no need for "to."
Where I live, this is not how we would say this. We do not ask for a day off to be "sanctioned." However, if that is typical for your office, then with the corrections above, it's okay.
(I would say "I'd like to take Monday, November 30, as a day off. Please let me know if this is okay.")
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.