simplest ai built with python

simpleAi.py

import random

greetings = ["Hello!", "What's up?!", "Howdy!", "Greetings!"]
goodbyes = ["Bye!", "Goodbye!", "See you later!", "See you soon!"]

keywords = ["music", "pet", "book", "game"]
responses = ["Music is so relaxing!", "Dogs are man's best friend!", "I know about a lot of books.", "I like to play video games."]

print(random.choice(greetings))
user = input("Say something (or type bye to quit): ")        
user = user.lower()

while (user != "bye"):
  keyword_found = False

  for index in range(len(keywords)):
    if (keywords[index] in user):
      print("Bot: " + responses[index])
      keyword_found = True
  
  if (keyword_found == False):
    new_keyword = input("I'm not sure how to respond. What keyword should I respond to? ")
    keywords.append(new_keyword)
    new_response = input("How should I respond to " + new_keyword + "? ")
    responses.append(new_response)
   
  user = input("Say something (or type bye to quit): ")
  user = user.lower()

print(random.choice(goodbyes))