- id: old_man
  name: Old Man
  description: A stooped old man with a grey beard.
  greeting: |
    "Hello, traveller. If you bring me the oil lamp,
    I will give you the key to the cellar."
  reactions:
    - onReceive: lamp
      response: |
        "Thank you! Here, take this key."
      gives: key
      consumes: lamp
  dialogue:
    - when: [{ flag: power_on }]
      text: |
        "You got the power running! The whole house feels less...
        watchful now."