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: 07426688661 is the contact number, I have you in a grey Toyota. Sentence2: Great. Can you tell me where you will be traveling to and from? Sentence3: I need to get there by 11:45. Sentence4: That's perfect, thanks! Sentence5: I need to book a taxi please. Sentence6: You are welcome. Thank you for calling us. Goodbye. Sentence7: Can I help you with anything else? Sentence8: No, that's everything. Goodbye. Sentence9: I want to go from wandlebury country park to huntingdon marriott hotel Sentence10: Okay, I will need some more information from you. What time would you like to leave? Question: Who has spoken the sentence 8? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: maybe, give me the address of one please Sentence2: There are several college's in the centre. How about Saint Catharine's College? It is on King's Parade and has free admission. Sentence3: I have train TR3343 arriving at london kings cross tuesday at 7:00. Shall I book that for you? Sentence4: Hi, I'm trying to find a place to go in the centre. A college would be fun to visit! Sentence5: Where will you be departing from, and what day would you like to travel? Sentence6: Yes, I need 4 tickets please. Please send me the reference number. Sentence7: Great! I would be happy to help you find one. Are you looking for one with free admission? Sentence8: Have a nice day and thank you for contacting us. Sentence9: Your tickets have been reserved, and just to clarify, that train departs at 07:00, and arrives in London, Kings Cross at 07:51. Wouldn't want you to miss the train! Ref#: AQDCG6N8 Sentence10: I'll be departing from Cambridge, and would like to leave on Tuesday. Sentence11: Thank you. I also need a train to London Kings cross, arriving by 9 Sentence12: OK thank you that is all I needed today. Question: Who has spoken the sentence 2? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: Little Seoul is located in the centre of town. Is there anything else I can help you with? Sentence2: How about korean food? Sentence3: Little Seoul is an expensive restaurant that serves Korean food. Sentence4: little seoul is at 108 Regent Street City Centre Sentence5: What area is this in? Sentence6: There are no restaurants serving Romanian food. Sentence7: I would like an expensive Romanian restaurant, please. Sentence8: Can I have the address please Question: Who has spoken the sentence 1? (A) User (B) System

SOLUTION:
Answer: (B) System