title: Twilio Autopilot change previously collected fields
body: <p>I am trying to set up a time and date to schedule an appointment, so I collect the date first and verify that times are available on that date. Then I try to collect a time for that date, if that time does not exist I want the customer to be able to ask something like, &quot;How about Friday at 6pm.&quot; and it will change the date. Is there an easy way or workaround to get this functionality?</p>