Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: I don't need reservations I just need the address and price range. Sentence2: That won't work for me. When does the next one leave on Tuesday? Sentence3: I need a room. Do not need wifi or parking. Sentence4: Yes and Can you book it for me and get a reference number ? Sentence5: Certainly. What area of town would you like to stay in? Sentence6: Yes that time works. Please book it. What is the train ID? Sentence7: I am planning my trip to Cambridge and need a train leaving Peterborough after 21:45. Sentence8: I don't feel comfortable giving that to you. I'll book on my own. Can you just give me info on a place to stay? Sentence9: The first train leaves at 21:48. Sentence10: Enjoy your visit. Sentence11: The train ID is TR8054. May i have your details (Name, Phone number, ID, email) so i can go ahead and make the booking for you. Sentence12: Thank you that will be all! Sentence13: I have one leaving at 22:19. Would you like to book it? Sentence14: moderate price range. Located at 63 milton road. Sentence15: Okay, I have the alpha-milton guest house in the north area. Will that work for you? Sentence16: On what day will you be checking in, for how long, and for how many people? Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User