code: @Controller(next = "askTimeForMeeting")
      public void confirmTiming(WebSocketSession session, Event event) {
          reply(session, event, "Your meeting is set at " + event.getText() +
                  ". Would you like to repeat it tomorrow?");
          nextConversation(event);    // jump to next question in conversation
      }
docs: This method will be invoked after {@link SlackBot#setupMeeting(WebSocketSession, Event)}.
  
  @param session
  @param event