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: I can certainly help you with that. The Express by Holiday Inn is a great choice. So can you confirm that was Friday for 2 people, 2 nights? Sentence2: Actually, I change my mind. I can arrange the booking myself. Can you just let me know if they offer free wifi? Sentence3: Can you book me a room for 2 people for 2 days starting Friday at the express by holiday Inn in cambridge. Sentence4: Yes, they do have internet. Sentence5: You're welcome. Please contact us if you would like us to make the reservation instead. Sentence6: Thank you for all your help today. Question: Who has spoken the sentence 4? (A) User (B) System
Solution:
Answer: (A) User