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: I have two indian restaurants in the east, and one each in the north and west. Where do you want to dine? Sentence2: I've successfully booked your table. The reference number is GK41EYSD . Sentence3: I would like to go to a nice nightclub Sentence4: I need a restaurant that serves Indian food in the moderate price range Sentence5: Yes. I would like a reservation for 1 person at 13:15 on Thursday. Sentence6: No thank you, that is everything that I need. Sentence7: We have ballare that's night, it's in the city centre. Sentence8: Okay, what is the address and entrance fee for it? Sentence9: Thank you and enjoy your stay. Sentence10: Ballare is Heidelberg Gardens, Lion Yard, postcode cb23na and the entrance fee is 5 pounds. Is there anything else I can help you with? Sentence11: I am also going to need a taxi that goes from Ballare to Meghan and gets me to Meghan by 13:15 for my reservation. Sentence12: I would like the one in the west. Sentence13: OK, I have a grey skoda taxi booked for you. The Contact number is 07058412849. Is there anything else I can help with today? . Sentence14: Meghan is in that area and serves Indian food would you like to make a reservation Question: Who has spoken the sentence 5? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: I'm looking for an expensive restaurant to dine at, somewhere in the North End of the Cambridge area. Sentence2: I have many different times available. The first one leaves at 12:26 followed by 13:36, 14:36, 15:36, and so forth until 23:36. Which time would you like best? Sentence3: I'm glad I was able to help! Thank you for using the Help Desk. Have a great day! Sentence4: I have many trains leaving from Cambridge to London kings cross on Friday. What time would you like to book the train for? Sentence5: There are 5 expensive restaurants on the north side of town. What type of food would you like? Sentence6: Thanks! I also need to book a train leaving Cambridge on Wednesday. Sentence7: Any type of food is fine. Can you book a table someplace that sounds good? I need a table for 4 on tuesday at 19:30. Sentence8: Uuh... actually, I'm headed to norwich from cambridge on Wednesday. Sentence9: I apologize see that the TR5574 leaves Cambridge for Norwich Wednesday at 12:36 and arrives at 13:55. Will that work for you? Sentence10: I have booked you a table for 4 on Tuesday at 19:30 at Saigon City, on the north end of Cambridge at 169 High Street Chesterton and your reference number is JARZR20Q if you need to contact them between now and then. Sentence11: 12:26 should be okay can I please get the train ID and travel time? Sentence12: Sorry about the confusion on that, what time would you like to depart? Sentence13: Thank you for that information, that is all I need at this time. Sentence14: I would like to leave after 12:00 please, what do you have available? Question: Who has spoken the sentence 13? (A) User (B) System

Output: Answer: (B) System

Input: Consider Input: Sentence1: TR1079 leaves at 09:09 would that work for you? Sentence2: You are very welcome! I hope you have a wonderful visit. Sentence3: I prefer one in the east. How about a 4 star hotel with free parking there instead? Sentence4: It's cheap. Would you like me to book a room for you? Sentence5: Can you tell me the price of the train ticket, please? Sentence6: Okay there is city centre north b and b would you like me to book it for you? Sentence7: The price of the train is 30.24 pounds. Sentence8: Hello! I am planning my trip to Cambridge and need information on places to stay. Sentence9: That works for me. Sentence10: I have several options in the cheap or moderate price range with parking and wifi. How does the leverton house sound? Sentence11: Can you please tell me how long your stay at the Leverton will be? What day will you be checking in and how many people? Sentence12: ok Id be happy to help with that would you like a guesthouse or Hotel Sentence13: I hope so. Can I call any time? Sentence14: We are available anytime, enjoy the rest of your day. Sentence15: There are no 4 star hotels in the east section of town that offers free parking. Would you like to search for a guesthouse? Sentence16: Yes please. I also need a train that leaves after 9:00 on sunday Sentence17: Thank you so much, that's all I need. Sentence18: What is the price range of the Leverton House? Sentence19: Actually, I apologize no need to book, I was just gathering information. But I do need information on a train from leicester to cambridge. Sentence20: Is there anything else I can help you with today, bookings or more information? Sentence21: Yes that is fine I need the price range as well. Sentence22: i don't have a preference. I would like a room with a 0 star and free parking Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User