TASK DEFINITION: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
PROBLEM: Sentence1: You're welcome. Goodbye! Sentence2: Sure! Can you book a table for 8 people at 17:30 on Friday? Sentence3: Thank you. That's all I need right now. Bye. Sentence4: No. Choose one for me. Sentence5: There are a total of 14 different expensive Indian restaurants located throughout the city. Is there a particular area of town you would like to eat in? Sentence6: I'd like you to tell me about great Indian restaurants in the area. It's okay if they are expensive. Sentence7: Curry garden has good reviews, would you like to book there? Sentence8: Sure. Your reference number is QLMRQ3H2 . Anything else? Question: Who has spoken the sentence 2? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: How about the Hundington Marriott Hotel in the west? It gets 4 stars. Sentence2: Is that a 1 star hotel? Sentence3: I do not have a preference on the area. Sentence4: Can you look for a 4 star hotel in the same price range? Sentence5: No thank you that will be all Sentence6: Okay, in what area? Sentence7: Yes, it is called Nusha. Sentence8: Well, if you are sure, I hope you have a great visit! Thank you. Sentence9: Maybe I could help. Do you know the name of it? Sentence10: I would recommend the university arms hotel, which is centrally-located and offers free wifi and parking. Does that interest you? Sentence11: I've located Nusha and it's in the South. It's located in Cambridge Leisure Park on Clifton Road. Sentence12: Ok, thank you. I also need to find a hotel that is expensive. Sentence13: I have an attraction in mind that I need help finding. Sentence14: No. I'm sorry. It's not a 1 star establishment. Is there anything else I can help you with today? Question: Who has spoken the sentence 9? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: I don't care. However, I would like to know their price range as well as their address and phone number. Sentence2: Thank you. Good bye Sentence3: You're welcome, goodbye. Sentence4: Royal Spice is a cheap Indian restaurant located at Victoria Avenue Chesterton. Their number is 01733 553355. Is there anything else I can do for you today? Sentence5: I am looking for indian food in the north part of town. Sentence6: There are two restaurants serving Indian food in the North part of town. What price range do you want? Question: Who has spoken the sentence 5? (A) User (B) System

SOLUTION:
Answer: (B) System