from random import choice, randint


def get_response(user_input: str) -> str:
    lowered: str = user_input.lower()

    if lowered == '':
        return 'Gut, du bist sehr still ...'
    elif 'hello' in lowered:
        return 'Hello there!'
    elif 'how are you' in lowered:
        return 'Good, Thanks!'
    elif 'bye' in lowered:
        return "See you later!"
    elif 'roll dice' in lowered:
        return f'you rolled: {randint(1, 6)}'
    else:
        return choice(['I do not understand...',
                       'What are you talking abaout?',
                       'Do you mind rephrasing that?'])