[{'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: CHANGES TO THIS POLICY We reserve the right to change our Privacy Policy in the future without prior notice. The services we offer are likely to change, and in the future it is therefore likely that our Privacy Policy will also need to be revised accordingly. Any changes to our privacy policy will be posted here."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]