Please correction this letter.
sub; agent details
I am guru. the two agents were used in the legislative assembly election result day. the detail is as follows
thanking you sir.
You need capital letters.
Other than that, I don't understand the letter so I can't offer any advice.
Is it common in your culture to end your letters with "thanking you sir"? Are you sure the person getting the letter is male?
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.