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: The first train leaving Stansted Airport after 17:45 leaves at 18:24. You'd arrive in cambridge by 18:52. Would you like me to book a seat on this train? Sentence2: Sorry about that. The postal code is cb58bs. Sentence3: There are many attractions. Churches, cinemas, colleges, and art gallery's. Do any of those sound appealing? Sentence4: To Cambridge, from Stansted Airport. Sentence5: Can you give me a few samples? I'll need the entrance fee, too. Sentence6: All Saints Church is free to get in as is Holy Trinity Church. Would you like more information? Sentence7: You are welcome. Enjoy your stay in Cambridge. Bye. Sentence8: Thanks so much for your help today, that was everything I needed. Sentence9: Yes. Postcode, phone number and entrance fee's if any of All Saints Church. Sentence10: Could you give me a little more information? Where will you be traveling to and from? Sentence11: Yes, I still need the postcode for All Saints Church. Sentence12: Yes please, what is the Train ID and price? Sentence13: That won't be necessary but thanks anyway. Although, I could use some help finding an attraction in the centre of town. Sentence14: Their phone number is 01223452587. There is no entrance fee. Is there anything else that i can help you with? Sentence15: I need a train leaving Thursday after 17:45. Sentence16: The train ID is TR5433 and the cost is 10.10 GBP per ticket. Would you like me to book this trip for you? Question: Who has spoken the sentence 9? (A) User (B) System
Student:
Answer: (B) System