Self learning chat bot

def learning_chat_bot(sentence):
  # split the sentence into a words list
  words = sentence.lower().split()
  
  # loop through the words to look for the keywords
  for word in words:
    if word in "hello":
      return "Hi, how are you?"
    if word in "bye":
      return "See you later!"
    if word in "thanks":
      return "You're welcome!"

# Examples
print(learning_chat_bot("Hello there!"))
# "Hi, how are you?"

print(learning_chat_bot("Bye!"))
# "See you later!"

print(learning_chat_bot("Thanks for teaching me how to code"))
# "You're welcome!"