<s>[INST] # Creating an Interactive Chatbot in Python
======================================================

In this guide, we'll create a simple interactive chatbot using Python. Our chatbot will be able to respond to basic user inputs and engage in a conversation.

### Prerequisites
---------------

*   Python 3.8+
*   Basic understanding of Python programming

### Step 1: Define the Chatbot's Personality
------------------------------------------

Before we start coding, let's define our chatbot's personality. Our chatbot will be friendly, helpful, and informative. It will be able to respond to basic queries and engage in small talk.

### Step 2: Choose a Natural Language Processing (NLP) Library
---------------------------------------------------------

For our chatbot, we'll use the NLTK (Natural Language Toolkit) library. NLTK is a popular NLP library that provides tools and resources for text processing.

```python
import nltk
from nltk.stem.lancaster import LancasterStemmer
stemmer = LancasterStemmer()
```

### Step 3: Define the Chatbot's Brain
-------------------------------------

Our chatbot's brain will be a simple dictionary that maps user inputs to responses. We'll define a few basic responses to get started.

```python
import random

# Define the chatbot's brain
brain = {
    "greeting": ["Hello!", "Hi!", "Hey!"],
    "goodbye": ["Goodbye!", "See you later!", "Bye!"],
    "thanks": ["You're welcome!", "No problem!", "Anytime!"],
}

def get_response(input_text):
    # Tokenize the input text
    tokens = nltk.word_tokenize(input_text)
    
    # Check for greetings
    if any(token.lower() in ["hello", "hi", "hey"] for token in tokens):
        return random.choice(brain["greeting"])
    
    # Check for goodbyes
    elif any(token.lower() in ["goodbye", "bye", "see you later"] for token in tokens):
        return random.choice(brain["goodbye"])
    
    # Check for thanks
    elif any(token.lower() in ["thanks", "thank you"] for token in tokens):
        return random.choice(brain["thanks"])
    
    # Default response
    else:
        return "I didn't understand that. Can you please rephrase?[/INST]