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, please. I need 1 ticket. Sentence2: I also need to find a restaurant in the west with a moderate price range. Sentence3: I need to get out of the city on Friday, can you find me a train? Sentence4: how about one that serves british food? Sentence5: I have made that reservation for you on train TR2420 and your reference number is 2A3LMYL1 . Sentence6: I'm sorry, we don't have any Greek restaurants anywhere in town. Is there anything else that would work? Sentence7: Would train TR5767 work? It leavees at 05:00. Sentence8: I have three options with a moderate price range in the west. Would you prefer British, Indian, or Italian? Sentence9: Saint Johns Chop House serves British food and is located in the west. Would you like me to make a reservation? Sentence10: TR2420 leaves at 15:00. Would you like me to book it for you? Sentence11: What day will you be dining there? Sentence12: I have you booked on Friday at 10:00. The reference number is 5ALATF6D . Is there anything else I can help you with? Sentence13: There are many options available to you on Friday. Where would you be leaving from? Sentence14: That is all I will need, thank you. Bye. Sentence15: I will be dining there on Friday. Sentence16: I would like to depart from cambridge. Sentence17: Thank you for contacting Cambridge TownInfo Centre. I hope you enjoy your train ride and dinner. Sentence18: Do you have any options in the west with Greek food? Sentence19: No, we are going to norwich and need to leave after 14:15. Sentence20: Yes, please make a reservation for 6 people at 10:00. Question: Who has spoken the sentence 17? (A) User (B) System
Student:
Answer: (B) System