If you are trying to do:
John, schedule weeks
and receive
“Hi John, I’m happy to […] , how about next wednesday?”
then I don’t think ChatGPT is the right tool, its way overkill for just pasting a name into a template based on which input (“weeks”, “months”) you put in. If you really want to use ChatGPT as a personal assistant, I’d look for a plugin that it can leverage that will do the templating for you.