Well this isn't going to be great writing nor extraordinarily "in character", but I am going to respond as if he is sharing this at a tavern.
Alan, ehhh? Well if I received a letter from them there highfalutin fella I would respond to the letter even if it ain't addressed to me. Maybe see what going with these people. If there be gold involved, I would sure as hell try and get some of that gold. Those highfalutin peoples think they are so darn smart but ain't to hard to steal a bit a gold, 'specially when they want ya ta join dem der guilds. Pay da gold to get in, then take everything you can since they dey trust everyone who comes in. What da ya think, Alan? Hey, bartender, get me another beer for me and my friend Alan here.
P.S. A bit modern and the minor accent I tried for was norwegian (I think), since I don't know the slang of medieval commoners.
