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: Okay. I don't care if it is a hotel or guest house, but it needs to be expensive, 4 stars, and in the centre. Sentence2: I would like moderate pricing and 4 stars please Sentence3: I am still having issues finding a hotel for you, would you please restate your criteria one more time? Sentence4: Its been such a pleasure talking to someone as polite and eloquent as you, enjoy your day. Sentence5: There are 11. What kind of museum would you like to visit? Sentence6: I want some entertainment in the centre. What do you have? Sentence7: No need to book it, just give me the address please Sentence8: I'm sorry, there is not anything in the centre. There are some venues in all of the other areas though. Do you have a second preference? Sentence9: Could you just pick one for me? Sentence10: How about castle galleries? Sentence11: Sounds interesting. What is their address with postcode? Is it free? Sentence12: The address for the University Arms Hotel is Regent Street. Sentence13: Okay thank you I won't be needing any more from you today. Goodbye Sentence14: Type does not matter. Please try the search again without type specified Sentence15: I found the University Arms Hotel, would you like me to book it for you? Sentence16: Sorry, no places matching that query. Would you like to change your area, type, star rating, or price range? Sentence17: Is that 4 stars and in the moderate price range? Sentence18: I need a place to stay. Can you suggest a hotel in the centre of town? Sentence19: Of course, there are three hotels in the centre. Do you have any particular needs? Sentence20: It is 4 stars in the expensive price range. They also have parking and wifi. Would you like me to book this? Sentence21: Are there any musems in centre? Sentence22: It is free! The address is unit su43, grande arcade, saint andrews street cb23bj Do you need anything else? Question: Who has spoken the sentence 21? (A) User (B) System
Solution:
Answer: (B) System