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

[EX Q]: Sentence1: Is there any place to eat that serves Indian? Sentence2: Thank you so much. I think that will be it for today. You've been a great help. Goodbye. Sentence3: Yes, please book a table for 8 on Tuesday at 20:15. I'd also like the reference number, please? Sentence4: Yes could you please book that for me for 8 people and provide a reference number for the booking. Sentence5: Which area are you referring to? Sentence6: Which restaurant should I book? There are 5, in the west, that serve Indian food. Sentence7: Can you suggest one that has an expensive price range, please? Sentence8: I am looking to arrive by 17:15 on tuesday. Sentence9: Would you like me to reserve a table? Sentence10: I have the reservation booked at the restaurant. The reference number is 2YCEETCJ . Sentence11: We have many fine restaurants in the west, but I recommend Sala Thong, which serves Thai food. Would you like to book a table? Sentence12: I'm glad I could help. Have a wonderful trip and a wonderful day. Goodbye. Sentence13: Yes please book it for 8 people on tuesday at 20:15 Sentence14: Booking was successful, the total fee is 102.4 GBP payable at the station . Reference number is : AIM1QZ4C . Sentence15: I am looking for a train from Stevenage to Cambridge. Can you help me? Sentence16: I have found you a train that leaves at 15:54 and arrives by 16:43. Would you like this one? Sentence17: I would like it to be in the West of town. Sentence18: Yes, I recommend Tandoori Palace. It meets your specifications. Would you like to book a table? Sentence19: Thank you! I also am looking for a place to eat at in the west area. I would prefer a nice expensive one. Sentence20: Of course! What day would you like to leave and what time would you like to arrive? Question: Who has spoken the sentence 17? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Yes I was able to locate 4. Can I book a table for you? Sentence2: Thanks so much! Sentence3: Is there anything else that I can book for you or assist you with for your upcoming trip? Sentence4: Are you looking for a Danish restaurant? Sentence5: Yes please in the same area and price range. Sentence6: For four, Thursday, 11:45. Sentence7: Booking unsuccessful. Would you like to try another restaurant? Sentence8: Thank you have a good day. Sentence9: Yes please. In the centre of town. Sentence10: Yes please,for tonight at 9 PM if possible. Sentence11: I will make a booking for you at hk fusion, but I do need to know what day and time you prefer, and for how many people. Sentence12: I am looking for an expensive Danish place. Sentence13: Is there an expensive chinese restaurant in the centre? Sentence14: I am sorry I have no listings for that type of restaurant, is there any other type of food you would like? Sentence15: Booked at ugly duckling. Reference number: EQFGNMFY . Table will be held for 15 minutes. Sentence16: That was all I needed today thank you! Question: Who has spoken the sentence 10? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: The phone number for Camboats is 01223902112 and the address is The Plough, Green End, Fen Ditton. Can I help you with anything else? Sentence2: No, thank you. I have everything I need right now. Goodbye. Sentence3: I think there was a bad connection or a line crossed on that last sentence. I have the arrival time as 13:30, I just need the day. Sentence4: Okay, don't worry about it. Just please find me a train that arrives in cambridge by 13:30 Sentence5: I'm sorry. I don't have any information on the entrance fee. I'm not sure if they have one or not. Sentence6: Hello, a friend recommend I try out Camboats while I'm in town. Can you tell me more about it? Sentence7: TR5219 leaves from london kings cross at 05:17 arriving at Cambridge on Friday at 06:08. Would you like me to book a seat? Sentence8: Yes, please, and also the address. Sentence9: Yes, that would be fine. I'll need tickets for 7 people. Sentence10: I have a train on Thursday that arrives by 12:08. Will that do for you? Sentence11: you didn't even ask where i'm leaving. or what time. you're not very helpful "Help Desk" Sentence12: I will be traveling on Thursday. Sentence13: camboats is a boat in the east. Do you need a phone number? Sentence14: Done! The total is 165.20 Pounds, payable at the station. Your reference number is 1AGJWGQ4 . Can I help you with anything else? Sentence15: Can you tell me the entrance fee? Sentence16: I am glad to help you. Have a good day. Question: Who has spoken the sentence 9? (A) User (B) System
[EX A]:
Answer: (B) System