You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
One example: 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 is here: Answer: (A) User
Explanation: The sentence 1 is said by a user because the intent of it says that the information has to be gathered from the system

Now, solve this: Sentence1: Train TR0031 departs Stansted Airport for Cambridge at 09:24 and arrives at 09:52. Would this be ok? Sentence2: Sounds great! Can I get tickets for 3 people? Sentence3: There are 5 colleges there. Churchill college, Clare College, Clare Hall, Magdalene College and Queens' College Sentence4: I've booked you 3 tickets. Your total is 30.29 pounds and the reference number is 51M2VN7D . Sentence5: Stansted airport. Also, if I could arrive by 11:00 that would be great. Sentence6: I am planning to visit cambridge and would like a train leaving on thursday. Sentence7: Great. I am also looking for colleges to visit in the west. Sentence8: No, that is all that I needed. Thank you so much for your help! Goodbye. Sentence9: You're so welcome! Have a great day! Sentence10: No problem. Which station will you be departing from? Sentence11: Churchill College is on Storey's Way, their postcode is cb30ds and phone number is 01223336233. It's free to get in. Is there anything else you'd like to know? Sentence12: Can I get more information on the first one? Question: Who has spoken the sentence 3? (A) User (B) System
Solution:
Answer: (B) System