[{'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: However, if you: Purchase a product from DataViz Register a new product Download a trial version of our software Sign up for a mailing list or enter a contest Fill out a survey, or sign onto a page that requires authorization Or enter into any other transaction with us, You may be asked to provide us your name, e-mail address, phone number, fax number, postal address, credit card number (for purchases), and possibly other personal information. Additional demographic information may be optionally requested in order to improve our service to our customers. We may use the information you provide to: Keep you informed of new releases of our products."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty, Contact_Phone_Number_1stParty, Contact_Postal_Address_1stParty.'}]