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: I have train TR8903 that leaves at 18:40 and will arrive in Cambridge at 21:23. Would that interest you? Sentence2: Yes please book me for one ticket. Sentence3: Absolutely. Where are you coming from? Sentence4: Are you going to stay in a specific area of town? Sentence5: Booking was successful, the total fee is 75.09 GBP payable at the station . Reference number is : KHBLJGHN . Is there anything else I can do to assit you today? Sentence6: Also looking for a guesthouse in the cheap price range. Sentence7: I'm departing from birmingham new street. Sentence8: Is there a train I can take to cambridge that leaves after 18:00? Question: Who has spoken the sentence 7? (A) User (B) System
Solution:
Answer: (B) System