     sessionKey = sessionKey.first
 
     if sessionKey.indexOf("_") > -1
-      @botReply "01001101 ... I am checking this session key, #{sessionKey}.", yes
+      @botReply getMessage "validateKey", sessionKey
       @workspace.firebaseRef.child(sessionKey).once "value", (snapshot) =>
         if snapshot.val() is null or not snapshot.val().keys
-          @botReply "Sorry, looks like this session is closed by its host, I cannot get you in."
+          @botReply message.noSession
         else
-          @botReply "01001010 ... Joining session, #{sessionKey}"
+          @botReply getMessage "joinSession", sessionKey
           @workspace.getDelegate().emit "JoinSessionRequested", sessionKey
     else
       # TODO: fatihacet - implement getting the sessionKey via username

    @avatars.addSubView new KDCustomHTMLView
      cssClass : "tw-bot-avatar"
      tooltip  :
        title  : """ Hi there, My name is TBot. I am here to assist you. If you need help, just type "help" """


  # class scope variables
  replyHandlers =
    help        : "replyForSystemHelp"
    invite      : "replyForInvite"
    watch       : "replyForWatch"
    join        : "replyForJoin"


    @addSubView @avatars, null, yes

    tipTitle   = if @workspace.amIHost() then messages.host else messages.you

    @avatars.addSubView new AvatarStaticView
      size     :
