spaces and carriage returns in 'here documents'

As the title suggests, i am having some trouble figuring out how to pass spaces and carriage returns to a 'here document' ie

#!/bin/bash
/usr/local/install_script.sh <<SCRIPT
yes
no
<pass carriage retun here>
yes
no
<pass a space and then a carriage return here>
exit
SCRIPT

any idea on how i do this would be greatly appreciated

regards