[{'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: You can withdraw Your consent to Our use of Your personal information at any time. Withdrawal of consent does not operate retroactively and may affect Your ability to use our Services."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]