You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
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
Example solution: Answer: (A) User
Example 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

Problem: Sentence1: Your booking was successful. Your reference number is 1RIY72MY . Sentence2: great, that's all i need thanks Sentence3: I have 3 options available with free wifi in the centre of town. What is the price you are looking for? I have expensive to moderate available. Sentence4: friday if possible. let me get reference number Sentence5: Not even in the centre of town? Sentence6: Yes, that would be great. I'll need it for Friday, 3 nights, and 3 people, please? Sentence7: Sure. The address and phone number for La Mimosa is Thompsons Lane Fen Ditton/01223362525 and for Shiraz restaurant it is 84 Regent Street City Centre/01223307581. Sentence8: You're very welcome. Will you be needing a taxi? Sentence9: If you need any further assistance, please contact us. Sentence10: No but what is the address and phone number? Sentence11: The University Arms Hotel is in the centre and expensive, with WiFi. Would you like me to book that for you? Sentence12: Same price range as the restaurant please. Sentence13: Thanks. I also need to get a hotel with free wifi. Sentence14: No, my friends have a car. Sentence15: Which days would you like to stay? Sentence16: Sure, let's try Mediterranean, please? Sentence17: Sorry, not even in Centre. Is there a different type of cuisine you would like to try? Sentence18: No, I'm sorry there aren't any. Sentence19: shiraz restaurant and la mimosa are both in the center and seem to match your needs. Do you need a reservation? Sentence20: Can you let me know if Cambridge has any restaurants that serve Australian cuisine and are priced expensively? Question: Who has spoken the sentence 12? (A) User (B) System
Solution: Answer: (A) User