You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
One 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 is here: Answer: (A) User
Explanation: 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: Sentence1: No, that's all today. Thank you for your help! Sentence2: I'll be leaving from london liverpool street and I need to arrive in Cambridge by 11:15. Sentence3: Little Seoul is the only Korean restaurant in the center of town, and it is expensive. Would you like to book a table there? Sentence4: I would also like to book a train to Cambridge that day. Sentence5: I would like a place that serves Korean food. Sentence6: Ok. You are all ready to go. Your reference number is 52BZEK4D . The total fee is 33.2 GBP payable at the station. Can I help you with anything else? Sentence7: Thank you have a great day. Sentence8: Are there any expensive restaurants that are centrally located? Sentence9: There are many restaurants that meet your criteria, is there a specific type of food you would like to eat? Sentence10: Okay you're all ready to go! Your reference number is Y8V4909W . Can I help you with anything else? Sentence11: Where are you leaving from? Sentence12: That sounds just delightful! I would like a reservation for two at 20:00 for Friday. And I will need that reference number, please. Question: Who has spoken the sentence 2? (A) User (B) System
Solution:
Answer: (A) User