[{'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: We may use your information for marketing purposes, including sending emails or direct mail offers on services or products, including products and services offered by United as well as those offered by third parties, which may be of interest to you. You may control certain marketing practices through your MileagePlus account as described below."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]