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: How much time? Sentence2: I have two options one is the de luca cucina and bar and the other is riverside brasserie,which would you like? Sentence3: That is all, Thank you very much. Sentence4: I just mentioned that I would like to leave by 9:15 please. Sentence5: I would be happy to book the reservation for you, but I need a time, please. Sentence6: I also need a taxi to go between the hotel and the restaurant. I'd like to leave the Gonville hotel by 09:15 Sentence7: Ok, lets start with a hotel, any preference of type, area or price range? Sentence8: Booking completed! Booked car type: grey bmw Contact number : 07262375327. Is there anything else I can assist you with? Sentence9: Can I get the postcode with that? And their phone number, while you're at it? Sentence10: The hotel that I am looking for is called Gonville. I would like to book it for 8 people for 2 nights, starting on Wednesday. Sentence11: When would you like to arrive by? Sentence12: I would like to get some information about a local restaurant and a hotel please. Include the best options for me. Sentence13: I want to go Wednesday please Sentence14: What time would you like to arrive at the restaurant? Sentence15: I'm sorry for the confusion. Do you want a reservation at the riverside brasserie? If so, what time would you like that reservation? Sentence16: Booking was successful. Reference number is : 0NVL3745 . Do you need anything else? Sentence17: Yes their phone number is 01223366611 and their postcode is cb11ly. Sentence18: sorry, i'm being such a confusing pain. i don't want to reserve a table. i just need the address. Sentence19: I hope you have a pleasant stay! Sentence20: What day would you like to go? Sentence21: I want to leave the hotel by 09:15 Sentence22: Sure their address is Doubletree by Hilton Cambridge Granta Place Mill Lane. Anything else? Sentence23: The latter please. Can you book that? Sentence24: Please reserve for 8 people. Sentence25: Wehave four options that meet your needs, are preference on price range? Sentence26: I would like the moderate price range. Sentence27: Okay, and how many people will the restaurant reservation be for? Sentence28: Can you find me a modern European cuisine restaurant in the centre area? Question: Who has spoken the sentence 22? (A) User (B) System
Solution:
Answer: (A) User