input: 
  def create_chatbot_with_state_diagrams() -> str:
      """
      Create a simple chatbot using Python and state diagrams. The chatbot will go through 
      states based on user input and provide appropriate responses. If the state has no replies, 
      it will end the conversation.
      >>> create_chatbot_with_state_diagrams()
      Goodbye!
      =======================
      Conversation:
      Hello! How can I help you?
      Can you answer my questions?
      Yes, I'll do my best! What do you want to know?
      Where can I find good tutorials
      You can find tutorials online or join coding communities to get help from experienced coders. StackOverflow and Cod Academy are great resources.
      Goodbye!
      =======================
      Conversation:
      Hello! How can I help you?
      Can you answer my questions?
      Yes, I'll do my best! What do you want to know?
      Where can I find good tutorials
      You can find tutorials online or join coding communities to get help from experienced coders. StackOverflow and Cod Academy are great resources.
      Goodbye!
      """
  
output:     
      conversation = [
          ("Hello! How can I help you?", [
              ("Can you answer my questions?", [
                  ("Yes, I'll do my best! What do you want to know?", [
                      ("Where can I find good tutorials", "You can find tutorials online or join coding communities to get help from experienced coders. StackOverflow and Cod Academy are great resources."),
                      ("Goodbye!", "Goodbye!")
                  ])
              ])
          ])
      ]
  
      def chatbot(state):
          for question, replies in state:
              print(question)
              user_input = input().strip().lower()
              for reply_question, reply_answer in replies:
                  if user_input == reply_question.lower():
                      if isinstance(reply_answer, str):
                          print(reply_answer)
                          return
                      else:
                          chatbot(reply_answer)
                          return
              print("I don't understand that.")
  
      chatbot(conversation)
      return "Goodbye!"
  