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: I'm sorry, I have not found anything for that time yet. Can you choose another day or time please? Are you sure you don't have a preference for food type? Sentence2: Thank you for your help. This is all I needed. Sentence3: You're welcome. Please come again if you need more help. Sentence4: Expensive restaurant in the centre, please. Sentence5: I have over 100 restaurants to choose from, would you mind narrowing down your search for me with perhaps a food type or price range? Sentence6: I could really use something to eat. Sentence7: I'm not sure. Just something expensive. We are celebrating. Sentence8: Which restuarant do you want to book at? Sentence9: Not really. Which is your favorite? I'll book that for 13:00 Thursday. There will be 6 of us. Sentence10: Any particular type of food you're hankering for? Sentence11: I booked you at Curry Queen. Your table will be reserved for 15 minutes. Reference number is C06RJUNL . Sentence12: Let's try to book it for 12:00 then for 6 people on Thursday. I'll also need a reference number. Question: Who has spoken the sentence 3? (A) User (B) System
Solution: Answer: (B) System