[{'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: 4.4 Given the special nature of network services, Baidu Users agree that Baidu shall have the right to change, suspend or terminate some or all network services (including, but not limited to, subscription network service) without prior notice. Baidu does not guarantee that the network services will not be interrupted or the timeliness, security, accuracy of the network services."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]