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: That's perfect. That's all I need for now. Sentence2: I would like to take a train from Cambridge to Leicester. I have to get there for a dinner by 19:15. Sentence3: It doesn't matter, just pick the one you think is best! Sentence4: I have train TR4506 that leaves at 17:21 and arrives in Leicester at 19:06. Would this work for you? Sentence5: It is on Tuesday. Sentence6: yes those we have quite a few of, how can I help you? Sentence7: Okay, your trip has been booked. Train# TR4506. Leaving at 17:21, arriving at 17:06. Total cost is 37.79 GBP payable at the station. Your reference number is 244DG7UO Sentence8: Clare college is a nice place and phone is 01223336233 Sentence9: Can you possibly find me a swimming pool in the West? Sentence10: Do you need free admission or pay to get in? Sentence11: how about one that is in the type of college? Sentence12: Any you suggest will be fine. I'll just need the postcode, phone number, and entrance fee, please? Sentence13: I can help with that. What day is your dinner? Sentence14: There are no swimming pools in the west. Question: Who has spoken the sentence 12? (A) User (B) System
Solution:
Answer: (A) User