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: Give me the arrival time and train ID of the earlier train. Also find me a cheap restaurant that serves north american food if available or Indian food. Sentence2: I booked you a table at kohinoor! Here is your reference number ZTGXVBXU . Anything else I can do for you? Sentence3: There's a train that arrives at 20:07. If you don't want to cut it that close, there's an earlier train that arrives at 18:07. Sentence4: I would like to arrive by 20:15. Sentence5: The arrival time of the TR5389 is 18:07. There are four restaurants that meet your criteria. Would you like a recommendation? Sentence6: Do you have something that leaves later but still makes the arrival time? Sentence7: The first train leaves at 5:50. Sentence8: Where and when are you departing from? Sentence9: Yes, any you choose will be fine. I'll need to book a table for the same day, at 15:30, and it will just be me. Sentence10: great, what is your preferred departure or arrival time? Sentence11: I'm going to Ely from Cambridge on Sunday. Thank you. Sentence12: I'm hoping to book a train. Sentence13: Great, that's all I need, thanks so much for your help! Have a great day! Sentence14: Have a good day as well. Bye. Question: Who has spoken the sentence 9? (A) User (B) System
Student:
Answer: (B) System