[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: If at any time a you indicate that you no longer want to receive communications from Big Duck, or if you wish to cancel your account, or to change or correct any of your PII, you are free to do so and your PII will be deleted, changed, or corrected as requested."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]