Basic Chatbot

import datetime
def chatbot_response(user_input):
    user_input = user_input.lower().strip()
    # Greetings
    if user_input in ["hi", "hello", "hey", "hii"]:
        return "Hello! I am Nova. How can I help you?"
    elif user_input in ["how are you", "how are you?", "how r u"]:
        return "I am doing great! I am a bot, so always happy"
    elif user_input in ["what is your name", "what's your name", "your name"]:
        return "My name is Nova"
    elif user_input in ["who made you", "who created you"]:
        return "I was created by SUJIT KUMAR!"
    # Addition
    elif user_input.startswith("add "):
        try:
            parts = user_input.split()
            result = int(parts[1]) + int(parts[2])
            return f"Answer: {parts[1]} + {parts[2]} = {result}"
        except:
            return "Usage: add 5 3"
    # Palindrome
    elif user_input.startswith("palindrome "):
        word = user_input.split(" ", 1)[1]
        if word == word[::-1]:
            return f"Yes! '{word}' is a Palindrome"
        else:
            return f"No! '{word}' is NOT a Palindrome"
    # Reverse
    elif user_input.startswith("reverse "):
        word = user_input.split(" ", 1)[1]
        return f"Reversed: {word[::-1]}"
    # Even or Odd
    elif user_input.startswith("even or odd "):
        try:
            num = int(user_input.split()[-1])
            if num % 2 == 0:
                return f"{num} is Even"
            else:
                return f"{num} is Odd"
        except:
            return "Usage: even or odd 7"
    # Python
    elif "python" in user_input:
        return "Python is an amazing language!"
    # Time
    elif "time" in user_input:
        return f"Current time is: {datetime.datetime.now().strftime('%H:%M:%S')}"
    # Date
    elif "date" in user_input:
        return f"Today's date is: {datetime.date.today().strftime('%d %B %Y')}"
    # Help
    elif user_input in ["help", "commands", "what can you do"]:
        return """
Commands:
- hello
- add 5 3
- reverse hello
- palindrome madam
- even or odd 7
- time
- date
- help
- bye
"""
    # Exit
    elif user_input in ["bye", "exit", "quit", "goodbye"]:
        return "Goodbye! Keep coding!"
    else:
        return "I don't understand that yet. Type 'help' to see commands."
def main():
    print("=" * 40)
    print("      Welcome to Nova")
    print("      Type 'help' for commands")
    print("      Type 'bye' to exit")
    print("=" * 40)
    while True:
        user_input = input("\nYou: ")
        if not user_input.strip():
            continue
        response = chatbot_response(user_input)
        print("Nova:", response)
        if user_input.lower().strip() in ["bye", "exit", "quit", "goodbye"]:
            break
if __name__ == "__main__":
    main()