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: One night was a success. Your reference number is KYH3R6AZ . Sentence2: Sure. Do you want the same part of town? Sentence3: Everyone keeps telling me I have to stay at Cityroomz when I visit next. Have you heard of it? Sentence4: Thank you so much. Sentence5: Is there anything else I can do for you? Sentence6: No, Please book me at cityroomz if 3 people and 3 nights starting from wednesday is unavailable can you try one night? Sentence7: Well, are there any other hotels that I can stay at during this time. I really need these dates. Sentence8: No. that is all . Thanks. Sentence9: Thank you, good bye. Sentence10: Yes. It is a moderately priced hotel in the centre of town. They don't have a star rating, but do offer free wifi. Would you like help booking a room there? Sentence11: Yes, I would like to book it for 3 people and 3 nights starting from Wednesday. Sentence12: I'm so sorry, but I was unable to book per your request. Would you like to try a shorter stay or a different date? Question: Who has spoken the sentence 7? (A) User (B) System
Solution:
Answer: (B) System