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'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: Yes try 15:30 on saturday and need a reference number thank you. Sentence2: I'd be happy to help you find something. Are you looking for something in town centre? There are cinemas, colleges, concert halls just to name a few. Sentence3: I'd love to try a local restaurant Sentence4: Just do what I say! I don't care what you choose! Give me the necessary information too. Then, get me a restaurant in the east that's expensive north indian food Sentence5: How about expensive restaurants that serve Indian food in the same area? Sentence6: Booking was successful. The table will be reserved for 15 minutes. Reference number is : MKRUJ1BR . Is there anything else I can do for you? Sentence7: I apologize but I was not able to book for that time. Would you like me to try another time slot? Sentence8: Try the Cambridge Museum of Technology which is a museum. The entrance fee is 5 pounds and postcode is cb58ld. There are no expensive North Indian restaurants in the east. Sentence9: First, I need an attraction in the east. Can you choose one and get me the entrance fee, postcode, and attraction type? Then I'd like an expensive restaurant in the east. Sentence10: I'm sorry, that's a lot of information for just one response. There are 10 attractions in the east - do you care what sort? Sentence11: We are happy to help. Thank you for using our service. Have a great day! Sentence12: I want the Pipasha for 1 at 16:30 on Saturday. Sentence13: We have many restaurants in town. What type of cuisine are you looking for, and what's your budget like? Sentence14: For expensive restaurants with Indian food, we have Pipasha, and the Sitar Tandoori. Sentence15: Great! That is everything I needed. Thank you! Sentence16: I'm looking for someplace to go in town. Question: Who has spoken the sentence 3? (A) User (B) System

Output: Answer: (B) System


Input: Consider Input: Sentence1: Is there anything else I can help you with? Sentence2: Thank you very much for your help! Sentence3: Darn. Will you look for a Turkish restaurant in that area instead? Sentence4: I am looking for a restaurant in the center of town that would serve South Indian food. Sentence5: No, that's all I needed. Thanks so much. Sentence6: Thank you for calling, goodbye. Sentence7: I'm sorry I have nothing listed matching your criteria. What about just Indian food? Sentence8: You have your choice of Meze bar, Anatolia, or Efes Restaurant. Sentence9: Can I get the address of Anatolia? Sentence10: Anatolia is located at 30 Bridge Street City Centre. Question: Who has spoken the sentence 9? (A) User (B) System


Output: Answer: (B) System