please changing color of visitor when the message not response yet.
sometimes I'm handle more than 3 customers at the same time and also I have many visitor at my list. when one of my visitor send chat to me, it just sound Dink without sign from visitor list that send the message. So I must click one by one to check whose the sender.
so please add some sign or mark to visitor list when visitor message not yet response.
Maybe for simple just change the background color.. or maybe can give some blinking sign at visitor name.