If Set Batch error

I'm trying to use SET /p for for a simple yes no scenario but my syntax seems to be all screwy:

SET /p var="Knock Knock! "

IF NOT %VAR% == "Who is there" ( ECHO "NOPE")

SET /p var="Orange! "

IF NOT %VAR% == "Orange who?" ( ECHO "NOPE)

ECHO "Orange you glad I didn't say banana?"

Sorry to waste your time with a simple question