You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
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
Example solution: Answer: (A) User
Example 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

Problem: Sentence1: Okay I successfully booked it. Reference number is : MGYR3882 . Sentence2: Goodbye to you as well and have a nice stay! Sentence3: I don't have a preference. Pick one that you like? Sentence4: Do you mean Kings Lynn station for your departure site? Sentence5: Yes, I need to get to Cambridge by 17:15. From the Kings Lane station. Sentence6: Thanks. I am also looking for some Korean food in the north part of town. Sentence7: That works, can I get an address? Sentence8: how about da vinci pizzria? Sentence9: I need a train that is leaving on wednesday. Sentence10: Then can I do a search for one that serves Italian food instead? Sentence11: Do you have a destination in mind? Sentence12: No thank you. That was all I needed to know. Thanks and goodbye. Sentence13: Yes, it's located at 20 Milton Road Chesterton. Do you need to book a table? Sentence14: unfortunately, there aren't any korean restaurants in that area. Sentence15: Yes. I need to book tickets for 8 people. Sentence16: What is your price preference? Question: Who has spoken the sentence 12? (A) User (B) System
Solution: Answer: (A) User