[{'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: On Clothing and Footwear, qualified sellers accept 30 day exchange subject to the following conditions: Clothes and footwear are not used (other than for trial), altered, washed, soiled or damaged in any way. Original tags and packaging should be intact. For items that come in branded packaging, the box should be undamaged."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]