Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: that is very ok Sentence2: No. I think you've met all of my needs today. Thank you. Sentence3: We have two moderately priced options, the varsity restaurant and bloomsbury restaurant, any preferences? Sentence4: There are many trains available on Sunday. Any particular time? Sentence5: How many tickets would you like? Sentence6: Thanks! I also need a train from Cambridge to London Liverpool Street. Sentence7: I have you booked, the reference number is 206RQ761, can I help with anything else? Sentence8: the varsity restaurant sounds good. Could you book a table for 7 people at 14:45 on saturday? Sentence9: 7 tickets please and I'll also need to get a reference number from you, just in case Sentence10: Hi I'm excited to try an international restaurant in the centre, are they are I can go to? Sentence11: What day would you like to travel? Is there a time you would like to leave or arrive by? Sentence12: TR0189 leaves at 15:59. Is that alright for you? Sentence13: I am glad to help. Enjoy ! Sentence14: 7 tickets on TR0189 is 92.96 GBP. You can pay that at the station. Your Reference number is : GAH6RYK1 . Can I assist you with anything else? Sentence15: I need that leaves after 15:15. Sentence16: I will be traveling on Sunday. Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System