Code:
alias HowMany {
  if ($lines(Name.txt) == 1) {
    var %rn1 $rand(1,6)
    if (%rn1 == 1) { 
      var %msg Very good
    }
    elseif (%rn1 == 2) { 
      var %msg It went ok I guess.
    }
    elseif (%rn1 == 3) { 
      var %msg It went very well for you.
    }
    elseif (%rn1 == 4) { 
      var %msg It went well for you
    }
    elseif (%rn1 == 5) { 
      var %msg It didn't go as planned.
    }
    elseif (%rn1 == 6) { 
      var %msg It didn't go well for you.
    }
    msg $1 %msg
  }
  elseif ($lines(Name.txt) == 2)

Using gotos is just kinda bad practice I suppose it works though.

I guess it would probably be better to make those responses into a token and just use the random number to pick which token to use.