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

Example Input: 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
Example Output: Answer: (A) User

Example Input: Sentence1: Booking was unsuccessful. Do you have a different time preference? Sentence2: Is it in the expensive price range? Sentence3: Yes book a table, thank you. Sentence4: I was happy to help, enjoy your meal. Sentence5: Sure, try booking that one for the same people, date, and time, please. Sentence6: Can you please give me a day and time that you would like to book a table for? Sentence7: No, that's all I need. Thank you for your assistance! Sentence8: I am looking for Korean food, in the Centre of town. Sentence9: No. How about finding another restaurant in the same area and price range. Sentence10: I've booked your table for 7 people on Monday at 13:45 at Kymmoy. Your reference number is 1MS5BUU6 . Is there anything else I can help you with today? Sentence11: There is one Korean restaurant in the centre, Little Seoul. Would you like the address and phone number? Sentence12: How about Kymmoy? It's an Asian restaurant in Expensive price range, located in Centre area. Sentence13: Yes, it is expensive. Are you interested in booking a table there? Sentence14: 13:45 on monday and a table for 7 please. I will need a reference number too. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Where will you go to ? Sentence2: The phone number is 01223452587. Sentence3: I will be travelling to Leicester. Sentence4: Okay. My computer shows forty-four attractions in the centre of town. Can you give me some more details so we can narrow the search? Sentence5: I need the phone number and postcode. Sentence6: TR8631 cost 37.80 pounds Sentence7: I am looking for a place to visit in the centre of town. Sentence8: Of course, I would recommend the All Saints Church. What would like to know about it? Sentence9: I'd be happy to provide you that information. The address is jesus lane and the postcode is cb58bs. Is ther anything else I can assist you with? Sentence10: Could I get the phone number as well? Sentence11: I also need a train leaving from cambridge on monday. Sentence12: No matter can you just recommend one? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User