title: Making a Slack Bot to answer 'Yes' or 'No' depending on a certain condition
body: <p>I want to make a Bot that replies 'Yes' or 'No' to a question, but will answer differently depending on a certain condition.</p>
  
  <p>I help run a summer camp, and we use Slack as our inter-office messaging system among the staff. We frequently have storms pop-up, and if we have thunder or lightning in the area we have to cancel outside activities for at least 30 minutes. I have set up a program to announce bad weather, but sometimes the weather problems last longer then 30 minutes. So I an constantly asked if we are still under a weather watch. If there a way I can set up a bot that people can ask if we are under a weather watch and it will respond 'Yes' or 'No'</p>