I need Ideas for the 'facebook build a chatbot challenge'.Thanks

Hi, this is Adeyinka. I’m trying to get ideas for this competition => https://messengerchallenge.splashthat.com/
I need something that will be superior in user experience to an equivalent web search implementation of the same idea. An original chat-bot idea not based on a pre-existing chat-bot.
Something in the following categories:

  1. Gaming and Entertainment
  2. Productivity and Utility
  3. Social Good