session["last_intent"] ||= nil
    session["users_name"] ||= nil
    puts "Previous Intent #{session["last_intent"]}"
    puts "Current Username #{session["users_name"]}"
    puts "Current Problem #{session["current_problem"]}"
    puts "User Zipcode #{session["zipcode"]}"
  
  
    # this bit is important!!!
    body = body.downcase.strip
  
    if match(body, user_greetings)
      if session["users_name"].nil?
            session["last_intent"] = "find_name"
            message = puka_greetings.sample + " What's your name?"
      else
            session["last_intent"] = "welcome"
            message = "Hi, #{session["users_name"]}. Welcome back!" + " Is there something needin' a fixin'?"
      end
    elsif match(body, help_greetings)
        session["last_intent"] = "emergency"
        message = description + " What seems to be the problem? \n" + problem_list
    elsif session["last_intent"] == "find_name"
        session["last_intent"] = "saved_name"
        session["users_name"] = body 
        message = "Nice to meet ya #{ body } 👋🏼! \n" + description + "Is there something needin' a fixin'?"
    elsif session["last_intent"] == "saved_name" || session["last_intent"] == "welcome"
        if is_affirmation? (body)
            session["last_intent"] = "problem"
            message = what_problem?
        elsif is_negation? (body)
            session["last_intent"] = "no_problem"
            message = "Glad to hear, partner!"
        else
            message = error_response
        end
    elsif session["last_intent"] == "problem" || session["last_intent"] == "emergency"
        session["last_intent"] = "pick_problem"
        # stores problem
        session["current_problem"] = body
        message = pick_problem body
    elsif session["last_intent"] == "pick_problem"
        session["last_intent"] = "get_zipcode"
        # stores location based on zipcode
        session["zipcode"] = body
        message = get_zipcode body