Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Great, thanks! What is their postcode? Sentence2: I need the travel time for 1 Sentence3: The travel time is 79 minutes, woudl you like me to book you? Sentence4: Hi I'm planning a trip to Cambridge and want to book a train. I would like to leave early Monday and arrive by 20:45 Sentence5: The postcode is cb17dy. Sentence6: How many tickets will you need? Sentence7: cineworld cinema's address is cambridge leisure park, clifton way. Sentence8: Thank you! That is all that I need. Sentence9: yeah that sounds good Sentence10: That's okay I'm looking to find a cinema in the south part of town though. Sentence11: I have a train leaving at 1836 and arriving at 1955, would you like me to book it for you? Sentence12: I'd like to go from Cambridge to Norwich. Sentence13: Enjoy your visit! Let us know if we can be of any further assistance. Sentence14: Where would you like to depart from? Question: Who has spoken the sentence 8? (A) User (B) System
Output:
Answer: (A) User