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: Find me a modern european restaurant in the south. Sentence2: I would like to arrive at the restaurant in time for my booking. Sentence3: What is the post code, area of town, and type of attraction? Sentence4: do you know where castle galleries is Sentence5: The post code is cb23bj, it is in the centre of town, and it is a museum. Sentence6: Yes it is. Would you like me to book it for you? Sentence7: Yes, book for 7 people at 15:30 on friday please. Sentence8: I have booked a grey Volvo for you. The contact number is 07114144706. Is there anything else I can do for you? Sentence9: Is it in the moderate price range? Sentence10: I also need a taxi, to go between the two places. Sentence11: Yes, I was able to book your party at 14:30. Your reference number is 7H21OO6L . Please note the table will be held for 15 minutes. You need anything else? Sentence12: I found Restaurant alimentum that fits your needs. Would you like me to book that for you? Sentence13: Yes, the address is unit su43, grande arcade, saint andrews street. Sentence14: Glad to have been of help. Take care. Sentence15: Well how about 14:30 then? Sentence16: No thanks. I think that was all. Have a good day. Bye. Sentence17: Sure! When would you like to leave and arrive by? Sentence18: I'm sorry, that isn't available for that time slot. Can you change it perhaps? Question: Who has spoken the sentence 14? (A) User (B) System
Solution:
Answer: (A) User