Teacher: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Teacher: Now, understand the problem? If you are still confused, see the following example:
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
Reason: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

Now, solve this instance: Sentence1: Yes, I am looking for a train leaving Cambridge going to Norwich on Friday. Sentence2: There are 4 boat attractions. What area of town would you like? Sentence3: Not sure what area, but could you pick one for me and tell me the address and phone number? Sentence4: Booked! TR4093 is your train, reference number is 08QY408D . 105.6 is the total fee. It leaves at 18:36 and arrives at 19:55. Sentence5: There are 19 trains from Cambridge to Norwich on Friday. Is there a particular time you'd like to leave or arrive? Sentence6: Sure, Camboats is always a good bet. Their address is the plough, green end, fen ditton, and postcode is cb58sx. Can I help you with anything else today? Sentence7: Thank you, you too. Sentence8: Yes, I would like to book the one that arrives closest to 20:30. I will need tickets for 6 people. Sentence9: Have a good day. Sentence10: I'd like to leave on Friday and arrive by 20:30. Sentence11: Excellent. Have a great rest of your day! Sentence12: Alright, you have plenty of options. The first train available leaves at 5:36, and they run every hour until 18:36. Would you like to book one of these trips? Sentence13: I have everything I need. Sentence14: I am looking for places to go in town, preferably something with boats. Question: Who has spoken the sentence 10? (A) User (B) System
Student:
Answer: (A) User