So I'm trying to set up a calendar event to schedule a meeting. That works and I can send invites to people but my issue now is trying to set it up so the people I sent the email to get to decide on the time to start for the calendar event. My idea was to send them an email inquiring as to what time they'd like the meeting to start and then storing the date they picked into a variable and then using that as the start date for the calendar event? Is that possible in Flow?