A followup question suggested by the participant.
Online Documentation
By default, the followup goes to the same participant/command. But this property can be set to invoke a different command.
A title to show the user. The prompt will be shown by default, when this is unspecified.
By default, the followup goes to the same participant/command. But this property can be set to invoke a different participant by ID. Followups can only invoke a participant that was contributed by the same extension.
The message to send to the chat.