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

Example Input: Sentence1: No I have nothing in particular in mind. Sentence2: Thanks. I am also looking for somewhere to eat near the museum. I'd like to have Chinese food for dinner. Sentence3: Let's do a museum. Can you please send me the postcode, and phone number please. Sentence4: we can do Museum of archaelogy and anthropology, it is in university of cambridge, downing street. code number cb23dz. their phone number is 01223333516 Sentence5: There are 3 options. I recommend jinling noodle bar. Sentence6: Great, now can you also book a taxi for me? I need to make sure I get to the restaurant from the museum in time for that reservation. Sentence7: Booking completed! The car type is a black honda and the contact number is 07016630526. Can I help with anything else today? Sentence8: Thank you and enjoy the city! Sentence9: What time would you like? Sentence10: Thanks, that's it for now! Have a good day! Sentence11: There is lots to see in the centre. Were you looking for a certain type? Sentence12: Booking was successful. The table will be reserved for 15 minutes. Your Reference number is : YNWUFRQ4 . Sentence13: A moderate price range would be best. Sentence14: There are 10 Chinese restaurants in the centre. What is your price range, please? Sentence15: Would you be interested in architecture, a museum, or perhaps theatre? Sentence16: I'd like to find an interesting attraction in the city center. Sentence17: I would like to reserve it for 11:15 for 8 people. Sentence18: That sounds interesting. Can I get reservations for Thursday? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example 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
Example Output: Answer: (A) User

Example Input: Sentence1: Thank you so much. I am all set. Bye. Sentence2: Hello, I'm in need lodging that has free wifi and zero stars. Sentence3: I would prefer one that is a guesthouse. Sentence4: Great! I found three results! Two are in the centre and one in the north. Which would you prefer? Sentence5: You're welcome. Please let us know if there is anything else we can help you with. Sentence6: I am not ready to book just yet. Thanks for your help. Sentence7: There are 2 options: one in the North and one in the town Centre. Which would you like? Sentence8: Yes, could you tell me the name of the lodging that you mentioned, please? Sentence9: Can I have the pricing and address of the one in the centre of town? Sentence10: The name of the guesthouse is El Shaddai. Sentence11: Certainly, is there anything else you need? Sentence12: I cannot see the price but it does say it is cheap. Their address is 41 Warkworth Street. Would you like me to book it of you? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System