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: Home from home is a 4 star guesthouse in the north area with wifi and parking. Would you like to make a reservation? Sentence2: Yes, please. Just me, same day as the restaurant, and I'll be staying 3 nights. Sentence3: Your reservation at Cocum at 14:00 for 1 person was successful. Your Reference number is : PD01ZLA3 . Sentence4: Booking was successful. Reference number is : TFWXYHTG . anything else today? Sentence5: Thank you. I am also looking for a particular hotel. It's called Home From Home. Sentence6: That's a very nice Indian restaurant on the west side of town. Would you like the phone number or a reservation? Sentence7: That's all I need for today. Thanks! Sentence8: I'd like a reservation, please. I'd need it for Monday, 14:00, and for one person. I'll need the reference number. Sentence9: I am looking for a restaurant called Cocum. Sentence10: Great. If you ever need anything else don't hesitate to ask. Question: Who has spoken the sentence 2? (A) User (B) System
Solution:
Answer: (A) User