[{'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: Additional notice for users of certain mobile websites. You may make purchases using MileagePlus award miles through certain mobile websites. If you choose to use these sites, then United will receive information from the third party about your purchase and will exchange information with the third party to facilitate the transaction and the use of miles from your account."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]