[{'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: Verizon Wireless does not publish directories of our customers' wireless phone numbers, and we do not provide or make them available to third parties for listing in directories unless you request that we do so."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]