bot_controller.rb

  def handle_payloads
    case current_message.payload
    when 'MAIN_MENU'
      step_to flow: 'hello', state: 'main_menu'
    when 'DIRECTIONS'
      step_to flow: 'informations', state: 'directions'
    when 'GENERAL'
      step_to flow: 'informations', state: 'general'
    when 'MENU'
      step_to flow: 'informations', state: 'menu'
    else
      step_to flow: 'hello', state: 'say_hello'
    end

    current_message.payload = nil
  end