[{'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: New Uses of Personal Information. From time to time, we may desire to use Personal Information for uses not previously disclosed in our Privacy Policy. If our practices change regarding previously collected Personal Information in a way that would be materially less restrictive than stated in the version of this Privacy Policy in effect at the time we collected the information, then we will make reasonable efforts to provide notice and obtain consent to any such uses as may be required by law."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]