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: Good morning! I'm trying to buy a train ticket that goes from Peterborough to Cambridge. Can you help me do this? Sentence2: Yes please. I need 5 seats. Sentence3: The train should leave on Sunday and should arrive by 16:45 Sentence4: No, I'm sorry, that's much too early. Could you find one closer to 16:00 or 16:20? Sentence5: The latest train departs at 15:48. Does that work for you? Sentence6: I have a train arriving at 08:09 that leaves at 07:19? Sentence7: There is the Man on the Moon in the Centre located at 2 Nofolk St. Their phone number is 01223474144 Sentence8: Booked! At the station you will pay 66 pounds. Reference number: JQ91RH6X . Sentence9: Sure, how about one that is in the type of entertainment? Sentence10: Okay, have a good day as well. Sentence11: I don't see anything in that area. Can I search a different area or venue for you? Sentence12: Thank you for all your help today. Have a great day. Sentence13: Can you give me the postcode and entrance fee? Thanks. Sentence14: I don't have the entrance fee, but the postcode is cb12lf. Sentence15: 16:38, fifty minute travel time. Shall I book it? Sentence16: Great I also need to find a concerthall to visit in the south. Sentence17: I can absolutely help! Do you have a specific day and arrival/departure time? Sentence18: For the one that departs at 15:48, what time would I arrive? Question: Who has spoken the sentence 2? (A) User (B) System
Student:
Answer: (A) User