[{'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: Furthermore, TripAdvisor LLC makes no guarantees for availability of prices advertised on our site. Listed prices may require a stay of a particular length or have blackout dates, qualifications or restrictions."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]