[{'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: Postage, billing and other information used to purchase or post an item, as well as, where postal services are provided through one of our programs, information required to clear customs (such as Tax ID or other identification numbers) and relevant postage information (such as tracking numbers and tracking updates)."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]