You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I have the TR4849 train leaving Ely at 13:35 on Monday. Sentence2: How about cityroomz? It is located in the centre of the city, is moderately priced, has 0 stars, and has free wifi. I think it would be perfect ofor you! Sentence3: Perfect, could you also assist me in finding a place to stay? Sentence4: What will be my arrival time in Cambridge and what is the ticket price, please? Sentence5: You're welcome. Have a great day. Good bye. Sentence6: You are booked and your reference number is QUJQMRK7 . Can I help you with anything else? Sentence7: That is everything, thank you for your help. Sentence8: From where will you be departing? Sentence9: I'm looking for a train that goes to cambridge, leaving after 12:30 on monday Sentence10: I am leaving from Ely. Sentence11: Oh I'm not picky on the area. I definitely need free wifi, moderate price, and 0 stars though. Sentence12: That's perfect I need it booked for 8 people for 5 nights starting on Monday. Sentence13: I sure can. What area would you like to stay? Sentence14: The price is 4.40 pounds. You will arrive at 13:52. Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User

Sentence1: Yes, please. I need to book the train for 8 people. Sentence2: enjoy your stay in cambridge! Sentence3: TR2125 leaves a 09:01 and arrives by 10:01. Would you like a ticket? Sentence4: Thanks! I also need a train to Broxbourne on Thursday. Sentence5: I'm looking for places to go watch entertainment. Sentence6: Fantastic, thank you very much. I don't need anything further today! Sentence7: There are 5 entertainment venues in Cambridge. Do you have an area in mind? Sentence8: There are quite a few options. Do you have a preference for departure or arrival time? Sentence9: I don't mind the area. can I get the address to one of them? Sentence10: Yes I was able to book that for you and your reservation number is 648C0A9S . Sentence11: Yes, I want to depart from Cambridge any time after 8:30. Sentence12: The Funky Fun House is amazing. I think you'll love it. Their address is 8 Mercers Row, Industrial Estate. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Can you book it for 7 people for 18:00 on Wednesday and then send me the reference number? Sentence2: Great, that is very helpful. Thank you. Sentence3: There are 14 expensive Indian restaurants in Cambridge. Do you know what part of town you would like to be in? Sentence4: No, thank you, that was everything I needed for today! Sentence5: Yes I would like it in the same part of town as the museum please. Sentence6: Hi. Would you happen to be able to suggest a museum in the east side of town? Sentence7: Sure thing! The reference number is 06G0MUZE . Is there anything else I can do for you? Sentence8: I found the Cambridge Museum of Technology. It is located at the old pumping station on Cheddars Lane. There is an entrance fee of 5 pounds. Sentence9: You're welcome! Enjoy your trip! Sentence10: Yes. I am also looking for an expensive restaurant that serves indian food. Sentence11: The Pipasha Restaurant is also in the East part of town and fits your criteria. Would you like me to book it for you? Sentence12: Can I help you with anything else? Question: Who has spoken the sentence 4? (A) User (B) System

Answer: (A) User