You can use,
button = { 'title': word, 'payload': '/intent_name{'entity_name':"'+word+'"}'}
Add a custom action after this step where you can use,
doctor_name = next(tracker.get_latest_entity_values('entity_name'))
You can use,
button = { 'title': word, 'payload': '/intent_name{'entity_name':"'+word+'"}'}
Add a custom action after this step where you can use,
doctor_name = next(tracker.get_latest_entity_values('entity_name'))