[{'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: We use cookies: •to help us maintain your session when you use Services and/or any Additional Service; •to enhance security of our systems; •to store your preferences and provide customized services to you; and •to help us understand how people use Services and to improve them."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Cookie_or_similar_Tech_1stParty.'}]