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: Let's go with the cheap one. I'll need a table for 7 on Sunday at 12:15 please. Sentence2: Can you try on saturday, 7 people, at 12:15 Sentence3: you're in luck I have two options for you. One is in the cheaper price range, the other is listed as moderately priced. Do you have a preference? Sentence4: Unfortunately the booking was not successful. Sentence5: Yes, you're booked for Saturday with reference number V54FG5X2 . The table will be reserved for 15 minutes. May I help with anything else? Sentence6: Thank you, goodbye! Sentence7: No, that's all I need. Thanks for your help! Sentence8: Yes I would like to find Spanish food in the center of town. Question: Who has spoken the sentence 7? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: TR7966 departs at 5:40. Sentence2: Your booking was successful. Reference number is : M0ZETXSZ . Is there anything else I can help you with? Sentence3: There are 33 different lodging options in town. Do you have a preference for type, area, pricerange, or star rating? Sentence4: Type doesn't matter. I want it to be cheap and in the north. With a 4 star rating. Sentence5: Great. Now I need a place to stay. Sentence6: The worth house is located in the north and cheap, would you like a reservation? Sentence7: Yes, that works. Can I get the train id number and the price please? Sentence8: I need a train to stansted airport from cambridge please. Sentence9: What area and price range are you looking for? Sentence10: What is the departure time of that also please? Sentence11: That's great. Have a safe trip. goodbye. Sentence12: It should be a 4 star hotel. Sentence13: Ok, what day will you be traveling? Sentence14: the train Number is TR7966, it will cost you 10.10 pounds. Sentence15: No thank you. I am all set. Sentence16: Is it rated 4 stars? Sentence17: Yes it is a four star. It also has free internet and free parking. When were you planning your stay? Sentence18: book it for 7 people and 5 nights starting from saturday Sentence19: Thursday. I need to arrive by 12:45. Sentence20: The closest to thing I can find is a train leaving at 5:40 on Thursday. It arrives at Stansted Airport at 6:08. Is this okay? Question: Who has spoken the sentence 2? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: Their address is Parkside, Cambridge Sentence2: Thank you so much. Do you have their address? Sentence3: You are more than welcome! Sentence4: Sure! I think you'll need the police. Their contact number is 01223358966. Sentence5: Thank you so much! I think that is all I need today. Sentence6: There's been a traffic accident and I need some help resolving a dispute about it. Question: Who has spoken the sentence 4? (A) User (B) System

SOLUTION:
Answer: (A) User