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: Sorry, no results for that search. Would you like to try a different area or price range? Sentence2: Are there any expensive restaurant that serves American, anywhere in the city? Sentence3: I am sorry, there are no restaurants that serve food from the americas either. Sentence4: Yes, please book for 4 nights on Thursday for 1 person. Sentence5: What are the expensive Chinese restaurants that are available? Sentence6: There are no expensive Chinese restaurants in the west, which would be close to your hotel. Would you like to try a different area? Sentence7: Could you double check for Chinese food? Sentence8: Would you prefer british, indian, thai or european cuisine? Sentence9: After checking again, I do have 1 that serves North American food in the centre area. Would that interest you? Sentence10: Yes it does. Shall I book? Sentence11: Your booking is complete your reference number is WYDAYXH4 they will only hold the table for 15 minutes. Sentence12: What price range and area of town are you looking for? Sentence13: That is everything. Thank you so much for your help. Sentence14: I need a place to stay. It needs to be a hotel that has free wifi. Sentence15: There are none. Would you like to change either your cuisine preference, or try a moderate? Sentence16: How many people would you like that booking for? Sentence17: It will be just me, myself and I! Sentence18: How about one that serves food from The Americas? Sentence19: The Huntingdon Marriott Hotel is on the west and is a 4 star hotel with wifi. Would you like to book a room? Sentence20: Great! Yes, I also need to find an expensive restaurant close to the hotel. Sentence21: Maybe. Does it have free parking? Sentence22: I am glad I could help you. Have a great trip. Sentence23: Is there one that happens to serve Chinese food? Sentence24: Yes please book that for one person on thursday at 12:15. Sentence25: Reference number is : 42UHJQT1 . Anything else? Sentence26: Price does not matter. I want something on the west. Question: Who has spoken the sentence 10? (A) User (B) System
Solution:
Answer: (A) User