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 want to leave after 13:00 Sentence2: Your all set, the total fee is 16.5 GBP payable at the station . Reference number is : EEJF27IZ . Bye! Sentence3: There are 38 trains that can get you there, what time would you like to leave or arrive by? Sentence4: A single ticket costs 16.50 pounds and total travel time is about 50 minutes. Will that be all today? Sentence5: Yes I'm looking for a train that departs on Wednesday from Peterborough. Sentence6: I would like to go to Cambridge. Sentence7: The TR5003 train leaves Peterborough at 13:48. I can book you a seat on it if you'd like. Sentence8: I changed my mind can you book that for me please? Sentence9: And where will the destination be? Sentence10: I don't need a ticket right now, but could you tell me the travel time and price? Question: Who has spoken the sentence 3? (A) User (B) System
Solution:
Answer: (B) System