input: Write a function to create a simple chatbot using Python and Dialogflow, which can answer questions about the current days of the week. The function should set up a Flask server to handle requests and use Dialogflow to detect and respond to user intents. If session_id is not present, the function should create one. The output should be the response from Dialogflow.
  def create_chatbot():
      from flask import Flask
      from flask_restful import Resource, Api
      from dialogflow import detect_intent_texts
  
      app = Flask(__name__)
      api = Api(app)
  
      @app.route('/', methods=['GET', 'POST'])
      def detect_intent_text(session_id=None, text=None):
          if not session_id:
              session_id = create_session_id()
          request = detect_intent_texts(session_id, text)
          response = request.fulfillment_text
          return response
  
      if __name__ == '__main__':
          app.run()
  
  assert create_chatbot() == "Create a simple chatbot using Python and Dialogflow, which can answer questions about the current days of the week."
output: def create_chatbot():
      from flask import Flask, request
      from flask_restful import Resource, Api
      from dialogflow import detect_intent_texts
      import uuid
  
      app = Flask(__name__)
      api = Api(app)
  
      def create_session_id():
          return str(uuid.uuid4())
  
      @app.route('/', methods=['GET', 'POST'])
      def detect_intent_text():
          session_id = request.args.get('session_id')
          text = request.args.get('text')
          if not session_id:
              session_id = create_session_id()
          request = detect_intent_texts(session_id, text)
          response = request.fulfillment_text
          return response