Teacher: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Teacher: Now, understand the problem? If you are still confused, see the following 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: Answer: (A) User
Reason: 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 instance: Sentence1: I am looking for a train leaving from Cambridge on Saturday. Sentence2: I'm a little confused, you said you are departing from both Cambridge and London Liverpool street. Are you sure isn't your destination? Sentence3: Yes its located between Victoria Road and the River Sentence4: Sure can you tell me where you are heding for and what time you would lie to leave or get there? Sentence5: Can I get the price on one of those please? Sentence6: The train should leave after 16:00 and should depart from london liverpool street Sentence7: Each of those trips is 13.28 pounds. Would you like for me to book one for you? Sentence8: No thank you. Please give me information on the attraction Jesus Green Outdoor Pool. Sentence9: There are four trains on Saturday with that route that leave after 16:00. Your options are 17:39, 19:39, 21:39 and 23:39. The duration of the ride is 88 minutes. Sentence10: Sorry, I'm departing from london liverpool street. Question: Who has spoken the sentence 3? (A) User (B) System
Student:
Answer: (B) System