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: Great! Any chance I could get a table for 7 there at 14:30 on Wednesday? I'll need the reference number once you make the reservation. Sentence2: I'll go with the 17:29. What is the train ID and price? Sentence3: Excellent. Where is it? Sentence4: Can you tell me if the restaurant Eraina is in Cambridge? Thank you. Sentence5: There are four trains that meet those criteria. The earliest leaves at 17:29 and arrives at 18:07. Trains are every 2 hours after that. Sentence6: The Address is Free School Lane City Centre, postal code cb23rh Sentence7: Actually I don't need any tickets today. I'm all set here. Thank you for your help. Sentence8: The booking was successful. Your table will be held for 15 minutes at 14:30 on Wednesday, and your reference number is K32GULPV . Sentence9: Thank you. I'll take it. Sentence10: Have a great day. Sentence11: The train ID is TR6673 and the price is 10.10 pounds per ticket Sentence12: How many tickets would you like me to book? Sentence13: Yes, it is in Cambridge. Sentence14: Okay great. I am also looking for a train leaving anytime after 17:15 going to Bishops Stortford on Thursday, can you book that for me please? Question: Who has spoken the sentence 1? (A) User (B) System
Solution:
Answer: (B) System