In OggChat we call these canned messages Shortcuts.
Here's an example of the Canned Message Shortcut Screen:
Here's an example of the Canned Message Shortcut Screen:

Once you create a shortcut, respond with the canned message by typing "/" then the shortcut name. For example, type "/hello" to send the hello message as follows:
The visitor will see the message on their live chat window:
That's it. You're ready to save time and increase sales with live chat!