def METHOD_NAME(self, chat_id, user_id):
    """
    Delete state for a particular user in a chat.
    """
    response = self.get_record(chat_id)
    user_id = str(user_id)
    if response:
        if user_id in response:
            del response[user_id]
            if user_id == str(chat_id):
                self.delete_record(chat_id)
                return True
            else: self.set_record(chat_id, response)
            return True
    return False