[{'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 may opt out of such direct marketing at any time. If you do not wish us, or our related entities, to provide such direct marketing to you, please call 1800 MY METRO (1800 69 63876)."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]