Airasia India — Change of name on the ticket

Sir/madam, i sukhvinder singh boparai booked a ticket of air asia from delhi to guwahati for 21st oct 2015. the ticket got confirmed .the name on the ticket is sukhvinder boparai. but i don't use my surname on my official documents. so i would like to change my name on the ticket from sukhvinder boparai to sukhvinder singh 9 as singh is my middle name) to avoid any inconvenience at the airport. so plz mail me a new ticket with the name sukhvinder singh on my mail address. [protected]@ymail.com. my pnr no. is WKW83E