Need a Tricky Solution - an llDialog with communication ability of llLoadURL - what are the options?

[Malestorm1488303118]

Hi -- 

I am working on an script  so that a user is able to send a dialog to a friend, but  the friend may not be nor ever have been in the same region as the user.        llLoadURL seems to work grid-wide, but the problem is I am not wanting to show the friend a webpage URL, just a text message.

For the purposes of this discusssion, sending an IM is not a vaid option.   The result needs to be a very noticable pop-up box.  

Are there any other LSL or tricky http options that might provide what I am looking for? 

[Qie Niangao]

llGiveInventory() perhaps?  (Notably *not* llGiveInventoryList(), which is within sim only.)

If the script needs to know that the other user has seen anything, llTransferLindenDollars() gives a result, but I'm not thinking of a way to associate it with a message you want to communicate.

(This all is assuming that the other user isn't complicit in the communication, as with wearing an attachment you could message.)