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

Ex Input:
Sentence1: I'm looking for a nice Italian restaurant. Nothing too expensive...like mid range? Sentence2: Nope, I think that will do it. Thank you so much! Sentence3: Okay, I have booked you at Pizza Express with reference number NK86VOJY . May I help with anything else? Sentence4: I don't care about the area. Could you book a table for 5 at 12:30 on Sunday? Sentence5: I have listing for 5 different ones,can I get what area you are looking for? Sentence6: You are welcome. Have a good day. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
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 Output:
Answer: (B) System


Ex Input:
Sentence1: I'd like to eat in the city centre, if possible. Got any reco on Chinese places? Sentence2: Hello, I'm trying to take a train on Wednesday that leaves from Broxbourne. Can you help me book a ticket? Sentence3: Thanks, I'm also looking for an expensive restaurant. Sentence4: Sure, which part of town are you interested in eating at? Sentence5: It doesn't matter, as long as I can book it for 6 people. I will need the reference number please. Sentence6: Try it for 18:45 on the same day Wednesday, and please give me the reference number. It will be for 6 people. Sentence7: You are quite welcome! Sentence8: That should be it. Thanks for your help! Sentence9: We have four: HK Fusion, Sesame Restaurant and Bar, Ugly Duckling, and Tang Chinese. Sentence10: I have 13, is there a time youd like to arrive by? Sentence11: I really need one that leaves after 11:00. Sentence12: Sure I can help you with that. I have train TR0788 leaving at 05:32 and will arrive to cambridge at 06:32. Sentence13: I have booked a reservation at HK Fusion. Your reference number is XO4S9CL7 . Do you need anything else? Sentence14: I am sorry but I was unable to book you at any of those restaurants. Would you like to try another time? Sentence15: Pick one for me. Book it for the same group of people at 18:45 on the same day. Sentence16: They are all expensive. Would you like to try an early time? Sentence17: Are any of those expensive? Sentence18: Success! TR5953 departs at 11:32 and arrives 12:32. Your reference number is EQCLFB3Q . Question: Who has spoken the sentence 16? (A) User (B) System

Ex Output:

Answer: (A) User