Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
See one example below:
Problem: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Solution: Answer: (A) User
Explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

Problem: Sentence1: Hi. I am looking for a train going to Cambridge on Thursday. Can you help me? Sentence2: No, I need a train that departs from stansted airport and it should leave after 11:30. Sentence3: Booking was successful for Thursday for one night. Your reference number is : GMAAU9LE . Can I help you with anything else today? Sentence4: I'm sorry but I was unable to book that hotel with your exact details. Would you like to book on another day or for a shorter stay? Sentence5: I'm also looking for a particular hotel. The name is Leverton house. Sentence6: The travel time on that route is 28 minutes. Is there anything else I can help you with? Sentence7: Train TR2775 departs from london kings cross. Sentence8: No, you have been a great help. Thank you and goodbye! Sentence9: Please. I'd like a room for myself, I'll be checking in on thursday and would like to stay for two days. Sentence10: Thank you, and please remember you can contact us at any time if you need any further assistance! Have a great day! Sentence11: Okay, try for one night instead please. Sentence12: The first train to Cambridge from the airport after 11:30 is TR9775, leaving at 12:24 and arriving in Cambridge at 12:52. Will that work? Sentence13: I think so. What exactly is the travel time on that one? Sentence14: Would you like me to make a booking for you? Question: Who has spoken the sentence 1? (A) User (B) System
Solution:
Answer: (B) System