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: Yes please, 2 people at 19:00 on sunday. Sentence2: Thanks! I'm also looking for a place to stay in the same area. Can you help me with that? Sentence3: Let's do expensive. Sentence4: Yes I have many options. What price range or area would you prefer? Sentence5: There are five expensive Chinese restaurants. Two of them are in the south. Sentence6: Yes i will find you one and inform you as soon.thanks a lot its a pleasure to serve you Sentence7: This restaurant will be fine. Sentence8: I was hoping to find something located in the center of town. Are there any expensive Chinese restaurants there? Sentence9: Would you like me to book a reservation for you? Sentence10: HK Fusion is an expensive Chinese restaurant located at 21 Burleigh Street, City Centre. Would you like more options? Sentence11: I'm looking for some Chinese food, any good places in town? Sentence12: Booking was successful. The table will be reserved for 15 minutes. Reference number is : MT2UHUCB . Question: Who has spoken the sentence 11? (A) User (B) System
Solution:
Answer: (B) System