Ambiguous Bot message change

Whenever the bot is confused, it throws an Ambiguous response with the text
"Did you mean :

  • FAQ 1
  • FAQ 2 "

Here whenever the user types “No”, there is message that is shown which is from the default conversions -> Standard conversations.
Here I want to change the response that we have when the user types “No”.
As shown in the below screenshot, i would like to add a dialog task as the standard response, but choose a task or editing the current response does not open the existing tasks list.
image