input: Write a function to create a simple chatbot using Python and state diagrams. The chatbot initializes in a state where it asks for user input, and it transitions between states based on the user's responses. Each state has a message to display to the user and possible replies that map to other states. If the user's input matches a reply in the current state, the chatbot transitions to the corresponding state. If the current state has no replies, the conversation ends.
  assert create_chatbot()==None
  assert create_chatbot()==None
  assert create_chatbot()==None
  assert create_chatbot()==None
  assert create_chatbot()==None
output: def create_chatbot():
      states = {
          'start': {
              'message': 'Hello! What is your name?',
              'replies': {
                  'Alice': 'state1',
                  'Bob': 'state2'
              }
          },
          'state1': {
              'message': 'Nice to meet you, Alice! How can I assist you today?',
              'replies': {}
          },
          'state2': {
              'message': 'Hello Bob! How can I help you?',
              'replies': {}
          }
      }
      
      current_state = 'start'
      
      while current_state in states:
          print(states[current_state]['message'])
          user_input = input().strip()
          if user_input in states[current_state]['replies']:
              current_state = states[current_state]['replies'][user_input]
          else:
              break
      
      return None