You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

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
Why? The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

New input: Sentence1: I have train TR7556 arriving at 18:08,is that okay? Sentence2: The restaurant should serve italian food and should be in the south. The restaurant should be in the expensive price range Sentence3: Absolutely! What type of cuisine are you interested in trying? Sentence4: Booking was successful. The table will be reserved for 15 minutes. Reference number is : UA39MMKX . You're all set. Is there anything else I can do for you? Sentence5: I will need that for eight people. Sentence6: No, thanks that's all goodbye Sentence7: Frankie and Bennys fits your criteria, shall I book you a table? Sentence8: Yes please, for the same group of people on the same day at 21:00. Sentence9: Great your booking was successful and your reference number is TESIIRJ1 . Sentence10: Thanks can you also help me find some food? Sentence11: I want to leave London Kings Cross on Monday and arrive by 18:15. Sentence12: There are many trains going to cambridge today. Where are you leaving from and what time do you want to depart or arrive? Sentence13: I need help booking a train to cambridge today. Sentence14: Thank you for calling and enjoy your dinner. Question: Who has spoken the sentence 2? (A) User (B) System
Solution:
Answer: (A) User