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 got five. any specific area you prefer? Sentence2: Sure thing, I will work on this and be back with you shortly. Sentence3: Are there any multiple sports arenas? Sentence4: I have booked your reservation. The reference number is UJEGRKNM . Is there anything else I can help you with? Sentence5: Unfortunately, I can't book anything without some more information from you. I would need to know the day and time you'd like to dine, as well as the number of people. Sentence6: When you're done working on it please give me a reference number for my records Sentence7: Not in the south. I have them in other areas of the city. Would you be interested in another area or another type of attraction in the south? Sentence8: Zizzi Cambridge sounds good, can you book that please? Sentence9: Centre of town please. I need to book a table for 7 people at 17:45 on Thuesday. Sentence10: Okay, that narrows your choices to three: Pizza Hut City Center, Ask, and Zizzi Cambridge. Any preference? Sentence11: I need a place to go in the south. Sentence12: I need a table for 7 people at 17:45 on Thursday. Sentence13: Well, that is disappointing but maybe we could try italian. Sentence14: I have not located any restaurants that serve modern global food, would you like me to locate a restaurant that serves a different food type? Sentence15: The south is lively with cinema, entertainments, a museum, nightclub, parks and theatre. What appeals to you? Sentence16: Hello! I'm looking for a cheap restaurant that serves modern global food. Question: Who has spoken the sentence 9? (A) User (B) System
Solution:
Answer: (B) System