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

Input: Consider Input: Sentence1: Where are you headed? Sentence2: anytime after 21:00. Sentence3: What time monday would you like to depart? Sentence4: okay, I do need the reference number also. Sentence5: Birgmingham New Street from Cambridge Sentence6: Yes will you book it for me ? Sentence7: I highly recommend Zizzi Cambridge in centere. It has excellent pasta and meatballs. Would you like me to book a reservation for you? Sentence8: Booking was successful. The table will be reserved for 15 minutes. Reference number is : DKSUCWY6 . Sentence9: Yes, on Monday for 2 people at 14:30. Olease give the reference number. Sentence10: thank you that will be all good bye Sentence11: I need 2 tickets and a reference number please Sentence12: My apologies, busy weekend and the system is lagging, you are set, reference number is B6SGLAAT total cost is 150.19 GBP, thank you for your patience. Sentence13: Have a nice day, goodbye. Sentence14: How many tickets will you need? Sentence15: Thank you so much, can you please also find me an Italian restaurant in the centre of town that's on the cheap side? Sentence16: TR8406 will depart at 21:40. Is that okay? Sentence17: I need a train on Monday leaving birmingham new street? Sentence18: Sure thing. I will work on getting this booked for you. Question: Who has spoken the sentence 10? (A) User (B) System

Output: Answer: (A) User

Input: Consider Input: Sentence1: Let's go with the cheap one. I'll need a table for 7 on Sunday at 12:15 please. Sentence2: Can you try on saturday, 7 people, at 12:15 Sentence3: you're in luck I have two options for you. One is in the cheaper price range, the other is listed as moderately priced. Do you have a preference? Sentence4: Unfortunately the booking was not successful. Sentence5: Yes, you're booked for Saturday with reference number V54FG5X2 . The table will be reserved for 15 minutes. May I help with anything else? Sentence6: Thank you, goodbye! Sentence7: No, that's all I need. Thanks for your help! Sentence8: Yes I would like to find Spanish food in the center of town. Question: Who has spoken the sentence 7? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: Taxi to de luca cucina and bar please Sentence2: I need to arrive by 15:30, please. Sentence3: Do you want a taxi now ? Sentence4: What time would you like to arrive at your destination? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (B) System