You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Thank you that will be all I need. Sentence2: I'm looking for a moderately priced place to stay in the south. Sentence3: I need to be there by 16:15. Sentence4: Ok I have booked that and the Reference number is 1N67NESA . Is there anything else I can help with? Sentence5: leicester is where i am going Sentence6: would you be leaving from cambridge? Sentence7: Thank you for using the Cambridge TownInfo Centre. Goodbye! Sentence8: Yes leaving from Cambridge, on Friday please. Sentence9: Would you like me to go ahead and book that? Sentence10: Thank you, I'll accept the recommendation at Aylesbray Lodge. Sentence11: I also need a train. Sentence12: Okay I have 19 trains. Could you give me a time by which you'd like to leave or arrive? Sentence13: Yes please. I would like to book it for 2 people for 3 nights starting from Wednesday. Sentence14: Okay, I have TR4170 that leaves at 9:09 and arrives at 10:54. It cost 37.80 pounds. Would you like this train booked? Sentence15: I have 2 options for you, both guesthouses. I recommend the Aylesbray Lodge, at 5 Mowbray Road. Sentence16: There are over two thousand trains. Where is your destination? Question: Who has spoken the sentence 8? (A) User (B) System
A:
Answer: (A) User