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

Example Input: Sentence1: Yes, see if 15:00 is available. Sentence2: I am sorry, I was unable to reserve a table for that time on Saturday, would you like to try a different time slot? Sentence3: I need a guesthouse in the cheap price range. Sentence4: Yes, I am also looking for a restaurant called The Nirala. Sentence5: Do any of these hotels have 4 stars? Sentence6: Booking was a success! Sentence7: Any area is fine, but I'd like to book rooms for 8 people. We'll be staying 5 nights, beginning on Saturday. Can any of them accommodate that? Sentence8: I have many results for a cheap guesthouse, would you like to narrow it down to stay in a particular area of the town? Sentence9: Glad that I could be of service. Goodbye! Sentence10: I'd like to book a table there for 8 at 16:00 on Saturday, please. Sentence11: I was able to get you rooms at the Alexander Bed & Breakfast. Reference number is : HREOM15W . Can I be of further assistance today? Sentence12: The nirala serves indian food in the north side of town. It is located at 7 Milton Road Chesterton, phone 01223360966. Is there anything else I can help with? Sentence13: Could you please provide the reference number? Sentence14: Great - that's all I need today. Thanks for your help! Sentence15: Sure thing. The reference number is Z1YHIR0Y . Sentence16: Yes, in fact 7 of the 9 hotels in your search criteria have 4 stars. Would you like to narrow your search by area? Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: Can I get a taxi from Magdalene to Hakka, please? I need to make sure I get there for that reservation. Sentence2: May I suggest Hakka, a very nice Chinese Restaurant in the north part of town. Shall I provide you with more information? Sentence3: The post code is cb41jy. Can I help with anything else? Sentence4: You're welcome! Have a great day! Sentence5: You're welcome is there anything else I can help you with? Sentence6: What is their postcode? Sentence7: Your taxi is a blue volkswagen . The contact number is 07121936050 Sentence8: Yes, get me some more information on magdalene college please Sentence9: No but can I make a booking for 8 people at 18:30 on sunday. Sentence10: We have 9 expensive Chinese restaurants across town. Do you prefer a specfic part of town? Sentence11: Yes, I do. I would like it to be in the north. Sentence12: Thank you so much for your help Sentence13: I'm looking for a high scale chinese restaurant. Sentence14: I have made those reservations your reference number is 61KTQSEO . Sentence15: Great! Thanks for all your help today! Goodbye Sentence16: Yes their address is Magdalene Street and their telephone number is 01223332138. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Sounds good. Please make a reservation for 3 next Wednesday at 14:15. I would like a reference number. Sentence2: Since I like Chinese food, could you see if any restaurants serve both Thai and Chinese food? Sentence3: Lets go with chinese food. He likes chinese just as much. Can you recommend one in the centre? Sentence4: Could you recommend an expensive restaurant in the city centre? Sentence5: I cant get you a table there. How about tang chinese instead. Your reference number is SAG9PAI9 . They have better food. Sentence6: I apologize I do not have any listed that serve both cuisines. Would you prefer one type of food? Sentence7: You're welcome! Have a great day! Sentence8: I can book a table at bangkok city for 2 when would you like the reservation? Sentence9: It's for my friend's birthday and he really likes Thai food. Sentence10: That is fine. Thank you. Sentence11: I show several restaurants in the City Centre. If you could perhaps indicate what type of food you would like it would narrow my search further. Sentence12: I have the ugly duckling in the centre. Would you like to make a reservation there? Question: Who has spoken the sentence 6? (A) User (B) System
Example Output:
Answer: (A) User