You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: You are all set! Please be on the lookout for a black lexus and the contact number is 07664673319. Sentence2: i want to book a taxi. The taxi should go to lynne strover gallery and should depart from parkside police station. Sentence3: i really appreciate, thanks Sentence4: No, that's everything. Thank you very much for your time. Sentence5: What time would you like to leave and arrive by? Sentence6: The taxi should leave after 22:15. Can I get the contact number and car type for that reservation? Sentence7: I'm happy to be of service! Have a wonderful day. Sentence8: Is there anything else I can do for you today? Question: Who has spoken the sentence 3? (A) User (B) System
A:
Answer: (B) System