Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I'd like a train to London Kings Cross to arrive by 21:15. Sentence2: Sure, which day would you like to travel? Sentence3: That's everything I needed. Thank you! Sentence4: You're welcome. Have a great day! Sentence5: Might I suggest train TR6595 leaving Cambridge at 19:00 and arriving at London Kings Cross at 19:51. Would that work for you? Sentence6: Yes, that does work. Could you book it for 1 person please? Sentence7: I am travelling on Thursday and going to Cambridge. Sentence8: Okay, I went ahead and reserved your ticket for Train ID TR6595. The cost will be 23.6 GBP payable at the station, and your reference number is GKTT3OTZ . Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System