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: Yes, there are several trains leaving that same day from London Liverpool Street. Sentence2: I am traveling to Cambridge and looking forward to try local restaurants. Sentence3: Bangkok City will fit your preferences perfectly. Would you like me to reserve a table for you? Sentence4: Do you have a preference for the area? Sentence5: I want to find an expensive restaurant serving expensive thai food Sentence6: Great! We have lots of great restaurants. Let's narrow down your search. What kind of cuisine would you like? Sentence7: Yes, that would be great. It will need to be on Friday at 14:30. I'd like a table for 4, please? Sentence8: I'd like a place in the centre. Sentence9: Your table is all set, reference #J0U97VPD . Can I help you with anything else today? Sentence10: Thank you! Are there any trains leaving that same day from London Liverpool Street? Question: Who has spoken the sentence 3? (A) User (B) System
Student:
Answer: (B) System