I think the easy answer would be: yes it's possible, but not in your lifetime ;-]
there are many universities who do studies in these area's who haven't even made such a program, let alone anyone doing it in a scripting language like that of mIRC O_o
there are a few premade bots/scripts out there which mimic some behaviour they picked up from the channel they are stationed in but none of them are even close to human like reactions ;-]
