Trending @Cognizant; Early release cognizant

I got a call from hr today to mark my last working day as 17 june but she wants me to send her a email saying that i want early release and when i told her to give me 1 more month and i will serve the bench then she said that its not possible as when you are on bench and you resign you get early release only but i have question that if that is the case then why does she wants me to write her a mail