Quote:

on *:INPUT:#: {
if ($1 == *I like dogs*) {
describe cats are better!
return
}
elseif ($1 == *hi*) {
describe how are you!?
return
}
}

Looks like what you want is to auto-reply to someone else saying these things?
Code:
 
on *:TEXT:*:#: {
 if (I like dogs iswm $1-) {
msg $chan Excuse me $nick $+ $chr(44) but cats are better!
 }
if ($1 == hi) {
msg $chan Hi $nick $+ $chr(44) how are you!?
 }
}