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: Departing from cambridge and I want to arrive somewhere around 20:00, can you get me 7 tickets and I'll need the reference number too. Sentence2: I am looking for a train leaving Cambridge. Sentence3: I definitely want to stay in the east part of town. Sentence4: I would like to go to leicester and leave on friday. Sentence5: Yes , I also need to find a place to stay. Preferably 4 stars and a guesthouse. Sentence6: thank you, you've been quite helpful Sentence7: I have quite a few trains that fit your criteria. Is there a certain time you need to leave or arrive by? Sentence8: How about 1 night? Sentence9: That sounds great, thank you. Could you book that for me for 7 people? I will need the reference number as well. Sentence10: The price range doesn't matter, but could you pick one and book it for 3 nights for 7 people starting Tuesday? Sentence11: We have quite a few, I'm sure we'll be able to get you where you want to go. Where is that, exactly? Sentence12: Glad to help. Have a lovely day. Sentence13: I completed your booking. The reference number is C11MOBV7 . Is there anything else I could help you with? Sentence14: I have six entries matching your request. Would you prefer cheap or moderate price range? Sentence15: The TR2508 arriving at 19:06 sound okay to you? Sentence16: I was able to book the A and B Guest House for 1 night. Booking was successful. Reference number is : 995PR933 . Sentence17: I'm sorry. There are no rooms available for that stay. Can you choose a different day or shorter stay? Sentence18: Sure! Our database contains 18 guesthouses rated 4 stars. To narrow down the search, could you tell me in what part of town you'd like to stay? Question: Who has spoken the sentence 12? (A) User (B) System
Solution:
Answer: (A) User