[{'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: Every now and then, Viber may send you notifications about administration and operation of the Service (for example, about your transactions, policy changes, technical issues, etc.). We may also send notifications about offerings by Viber or third-parties, that we think may be of interest to you. If you do not wish to receive such notifications, you may adjust your system settings to decline them (if you're using iOS systems) or opt-out at any time from receiving further notifications by not using our service."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]