How can i reply the message to another user ?

[sravani]

hello i am sravani , i want to reply a person who answer to my subject but there no post reply option to it and said that the topic is locked .so, how can i reply to him for another discussion related to my subject...

[lata21]

If you want to PM a person then just go to messages and type up his/her username in the 'To' section.