I guess "people" is me, the only one who has replied. I was having trouble understanding you, so I took a guess at what you wanted, and apparently guessed wrong. I can't "put the script together", as I have no idea what it's supposed to do.
If you want a response to be random, then use $rand(). You can have var %a = $rand(1,3) pick a random number from 1-3, or $rand(a,c) pick a random letter from 'a' to 'c'. You can then take your random action depending on what value is in %a. If %a has the value 'a' or 'b' or 'c', you can:
if (%a = a) do action1
if (%a = b) do action2
if (%a = c) do action3
Or you can create labels ":labelA" and ":labelB" and ":labelC", where the different actions are located, then you can do:
goto Label $+ $rand(a,c)
