Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: I'm glad I was able to assist you! Thank you for using Cambridge TownInfo centre. Sentence2: i want to book a taxi. Sentence3: I am going to camboats, from little saint mary's church. Sentence4: You're very welcome. Is there anything else I can assist you with? Sentence5: I need to arrive by 13:15 please? Sentence6: Where would you like to be picked up from, and what is your destination? Sentence7: Ok, I book a black volkswagen for you. The contact number is 07746689138. Sentence8: Great, thanks so much for your help. Sentence9: No that is all for now. Thank you Sentence10: What time would you like to get there? Question: Who has spoken the sentence 5? (A) User (B) System
A:
Answer: (B) System