I take it that you don't have the sword??? If you did, and the guy asked you to get the sword, you could just end the dialog, then talk to him again and he will then recognize that you have it. But you probably already knew that, right? If the sword is lost, then you could always type in the cheat code for it, place it in your inventory and then give it to the guy that wants it, if that is what you want to do. It would not be cheating since you have already had the fight to get the sword, right???
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Larry, ??? of the OHF