Starting Privae chat with in room

I am writing a chatting application in Java with my servets are processing requests.

i have created a room and now i want to create one-to-one chat i.e. private chatting within the room.

when i send message to the room as,

Chat chat = muChatObj.createPrivateChat(String room@conference.myserver.com/nick, MessageListener listener)

{ public void processMessage(file:///D:/mandar/one-to-one/smack_3_0_4/smack_3_0_4/javadoc/org/jivesoftware/sm ack/Chat.html chat,

file:///D:/mandar/one-to-one/smack_3_0_4/smack_3_0_4/javadoc/org/jivesoftware/sm ack/packet/Message.html message) { //code }

});

but i didn’t get any reply from room and also message is not going to the second user.

please show me some way to proceed.

Thanks in advance for all sujestions.