[{'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: You acknowledge and agree that you will have to provide hike Your mobile phone number. You expressly acknowledge, agree and understand that in order to provide Services , hike, may from time to time, access Your contact list and/or address book on Your mobile device to collect, use Your contact list or address book in accordance with the Privacy Policy. Further, you permit information contained in Your contact list and/or address book to be shared with other users of the Service for the Hike Caller service. By permitting us to collect information regarding Your contacts in Your address book, you hereby agree to provide hike a right to use such information for providing Services and also warrant that you have all requisite rights in your favour to share this information with hike. To ensure a better user experience, hike may also at times, access names stored in Your address book to ensure any incoming messages and push notifications via the SMS feature have a name associated with them for a superior user experience. For instance, if hike cannot access names on Your address book, when a non-hike user responds to a SMS sent from hike, the incoming reply will show the non-hike users number and not the name. By using the Services, you have given us permission to contact you via SMS and/or other communication mediums. In the event you delete your account, you will no longer receive any communication which is initiated/triggered by hike. To delete your account, open hike and go to Settings."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_Address_Book_1stParty, Contact_Phone_Number_1stParty.'}]