How to free up a date when user cancelled the registration in Date Reservation widget?

ate doubt Reservation. If I want to make available date due to a customer cancellation, as I do?

Unfortunately, I find it no way to free up the date in the Date Reservation Widget when someone cancelled their reservation.  A workaround for now would be to add our widget like Appointment Widget (http://widgets.jotform.com/widget/appointment_slots) and add the free dates there. You can label it as "Free Dates from Reservation" so clients can distinguish that. 

I have also forwarded this thread to our developers as a feature request. We can't promise any timeframe for this, but if there are updates, you should know it via this thread.

Thanks