def choice_and_run_llm_model(model_name: str, prompt: str) -> str:
    """
    A function to choose and run the appropriate LLM model based on the model name.
    """
    if model_name == "gpt-3.5-turbo":
        print("Using GPT-3.5 Turbo model")
    elif model_name == "gpt-4":
        print
    elif model_name == "claude-2":
        print("Using Claude 2 model")
    else:
        print(f"Model {model_name} not recognized. Using default model GPT-3.5 Turbo.")

    response = f"Simulated response from {model_name} for prompt: {prompt}"
    return response
