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: Not, at the moment. However, I would also like to find a hotel to stay with free wifi and a moderate price range. Sentence2: Do you want the reservations to begin on Friday? Sentence3: I will be departing from stansted airport and want to leave after 18:15. Sentence4: You are welcome enjoy ! Sentence5: Yes the same day please. Sentence6: Train TR5921, 44ld and leaves at 18:24 Sentence7: Where do you wish to depart from? Sentence8: yes, what is the travel time, train ID and price please per ticket Sentence9: Train TR5921 leaves Stansted Airport at 18:24 and arrives in Cambridge at 18:52 at a price of 10.10 pounds per ticket. Would you like to book this? Sentence10: There are 17 options. Do you care about area, type or star rating? Sentence11: There is one option available. It is cityroomz. Do you want to book? Sentence12: Yes, please book it for the same day for a party of 4 for 4 nights. Sentence13: I would like a 0 star hotel. Sentence14: Booking was successful. Your Reference number is : RWZ39FBX . Sentence15: Could you confirm the travel time and price please? Sentence16: I am looking for a train that leaves on Friday and goes to cambidge Sentence17: TR5921 departs the airport at 18:24 and arrives by 18:52, does this suit your needs? Sentence18: Thanks, that's all I needed today. Goodbye! Question: Who has spoken the sentence 3? (A) User (B) System
Solution:
Answer: (B) System