form_slot_mappings.py

def slot_mappings(self):
    # type: () -> Dict[Text: Union[Dict, List[Dict]]]
    """A dictionary to map required slots to
    - an extracted entity
    - intent: value pairs
    - a whole message or a list of them, where a first 
                                 match will be picked"""

    return { "outdoor_seating": [self.from_entity(entity="seating"),
                      self.from_intent(intent='affirm',
                                                 value=True),
                      self.from_intent(intent='deny',
                                                 value=False)]}