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'd like to dine in the center of town, please. Sentence2: Could you give me the address and phone number for the Slug and Lettuce please. Sentence3: I'm looking for a place to dine that serves gastropub food. I want it to be expensive. Sentence4: You're quite welcome! Thanks for contacting the Cambridge TownInfo Centre and have a great day! Sentence5: The slug and lettuce is located at 34 - 35 Green Street, postcode cb23ju. I'm sorry our system does not list their phone number. Is there anything else? Sentence6: I have two in the centre, the Backstreet bistro and The Slug and Lettuce. Would you like for me to make you a reservation? Sentence7: I wish you could provide their phone number. But other than that you've given me everything I need to know. Thank you goodbye. Sentence8: We have 3 options in Cambridge for expensive gastropub food. Would you prefer a place in the centre or in the east? Question: Who has spoken the sentence 3? (A) User (B) System

Output: Answer: (B) System


Input: Consider Input: Sentence1: You have been very helpful. Thank you. goodbye. Sentence2: Yes I certainly can! Your reservation was successful and your booking reference is 5F3KBH78 . Sentence3: Can you make reservations for 6 at 14:30 on Thursday? Sentence4: The J restaurant serves cheap asian oriental food in the centre of town. Their phone number is 01223307581. The address is 86 Regent Street City Centre. Sentence5: Can you tell me about the J Restaurant? Sentence6: Glad to help. Have a great day and enjoy your meal. Good bye. Question: Who has spoken the sentence 4? (A) User (B) System

Output: Answer: (A) User


Input: Consider Input: Sentence1: Yes please, for Thursday, 7 people at 16:45. I also need a reference number. Sentence2: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 2FX5XCUM . is there anything else i could help you with? Sentence3: It doesn't matter but it should be expensive and it should be in the centre. Sentence4: Yes, we would like American type food. Sentence5: Sure, what kind of restaurant? Sentence6: Okay and what time would you like to arrive? Sentence7: We actually have different categories of american food -- latin american, modern american, north american, and "the americas." Which of these would you prefer? Sentence8: How about latin america? Sentence9: I'd like to depart Cambridge after 21:30. Sentence10: How about North American cuisine instead? Sentence11: That is all I will need. Thank you. Sentence12: I'm sorry. I have no results that meet your criteria. Would you like to try a different food type, price range, or area? Sentence13: excellent, have a great day! Sentence14: Gourmet Burger Kitchen is expensive and in the center. Would you like to book a table? Sentence15: Yes please book that for me. Sentence16: I also need a train. Going to Ely Friday. Sentence17: Booking was successful, the total fee is 4.4 GBP payable at the station .Reference number is : ZC86HRQ4 . is there anthing else i can do? Sentence18: The train TR9842 is leaving Cambridge on Friday at 21:50. The cost is only 4.40 pounds and the travel time is 17 minutes. Would you like me to book? Sentence19: I am looking for information in Cambridge. looking for a restaurant. Sentence20: Do you have any cuisine preferences? Question: Who has spoken the sentence 5? (A) User (B) System


Output: Answer: (B) System