skyserpent, nice but there is really no need for any script for this. At least not if you're going to react on something the user must type. As, Haydos explained, simply create a quicktext, way more sufficient.
PS: and if you use sendmessage in a script your should ALWAYS check if you actually can send a message first, see scripting documentation.
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A much better script would be do detect a status change instead of detecting something the user has typed. Because it is not always possible for the user to type something in a chat window to begin with. And in that way the user can simply change his status to Be Right Back in whatever way he wants.
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