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

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
Answer: (B) System

Sentence1: I see there is a train on Friday that leaves leicester at 14:09 to Cambridge, could you book me a ticket for this train? Sentence2: I have 9 restaurants in that area. May I ask what your budget for lunch is? Sentence3: I have a 12:09 that arrives at 13:54. Would that do for you? Sentence4: The duration of the trip is 105 minutes. Have a great day! Sentence5: Yes, the gandhi is in the cheap price range. Their address is 72 Regent Street City Centre. Would you like me to book a table for you? Sentence6: Hi there, I'm trying to find a train that leaves from Leicester but it must be after 11:15. Can you help me book a ticket? Sentence7: I just need the train ID please. Sentence8: There are three cheap resturants int hat area, kohinoor, the gandhi, and mahal of cambridge. Sentence9: I think that is all for now. Sentence10: Did you only need one ticket? Sentence11: The train ID is TR6247, would you like to book a seat? Sentence12: The train ID is TR8882. Can I help you with anything else? Sentence13: No thank you, their information is enough at this time. Do they have a phone number? Sentence14: The Ghandi sounds nice. Can I get their address? And they are a cheap restaurant, right? Sentence15: Please book me a ticket for that train. Sentence16: Yes, their phone number is 01223353942. Is there anything else I can help you with today? Sentence17: Yes, that would be fine. Could I get the train ID? Sentence18: I need a train from leicester on thursday and should leave after 11:15. Sentence19: No thank you. That's not necessary. Can you help me find an indian restaurant in the centre of town? Sentence20: Nothing expensive please. Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User

Sentence1: do i book only one ticket Sentence2: Yes, please confirm how many tickets you would like me to book, just the one? Sentence3: Yes at 11 am , can you bnook the the one close to that time Sentence4: Okay, well I also need a train departing for Cambridge on Wednesday. Sentence5: I am looking specifically for Saint John's College. Sentence6: How about the 11:59 that will arrive by 13:27? It is 16.60 pounds. Sentence7: I need just a little more information to help. I think all places in Cambridge are special, and I would like to be able to narrow it down for you. Sentence8: That's all I needed. Sentence9: No, please book for 8 people and can I get the booking reference number? Sentence10: Booking was successful, the total fee is 132.8 GBP payable at the station . Reference number is : 98NW4G1V . Anything else? Sentence11: I'm looking for a special place, can you help? Sentence12: I have several trains headed to Cambridge on Wednesday. Where will you be departing from? Sentence13: There are 10 trains running that route on Wednesday. Do you have a particular departure time in mind? Sentence14: sorry i dont have that in our list. is there something else i can do for you? Sentence15: The train will be leaving Cambridge and going to London Liverpool Street. Sentence16: That will work can you book that for me. Sentence17: Wonderful, have a great day! Sentence18: Can you book it for me and get a reference number ? Question: Who has spoken the sentence 12? (A) User (B) System
Answer: (A) User