Allow Meeting Time as a Personalization Token

Writing on behalf of a customer - they have a HubSpot intake form they are using prior to a customer’s onboarding kickoff call and are trying to send an automated email when the customer submits the form that says “thanks so much for submitting the form. We will review it prior to our kickoff call scheduled for _______________” we could use the date of last meeting booked with the meeting tool, but there are some rare circumstances when the onboarding specialist would book it manually so this wouldn’t always work. I tried building a workflow that says if a meeting is scheduled with this type, set a custom date property, but it only lets me set the date property to today’s date or a static date. So I’d love the ability to either do this with a workflow or have a date proeprty just exist that I can pull into the email as a personalization token.