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: Not a problem. We have 33 places to choose from. Do you have any preferences? Sentence2: Great, thanks. I think that's all I need. Thank you for all of your help. Sentence3: I will also need a train departing from Cambridge. Sentence4: I am planning a trip to Cambridge and need to find a place to stay. Sentence5: The TrainID is TR3343. It departs Cambridge at 7:00 and arrives at London Kings Cross at 7:51. The trip duration is 51 minutes. Sentence6: Your reference number is QLYJQKTY . Sentence7: I need a train on Tuesday from Cambridge to London Kings Cross that arrives by 8:30. Sentence8: You are welcome. Have a great trip! Sentence9: I have two trains. One arrives by 5:51 and 7:51, shall I book one for you? Sentence10: I will need more information to be able to help you find the correct train, where are you headed? Sentence11: I need someplace cheap near the center of town. Free wifi and free parking are a must. Sentence12: No, that's OK. Can I get the latter train's ID, departure time, and how long the trip is? Sentence13: Let's book El Shaddai for 4 people for 2 nights starting Sunday. Can you please send me the reference number? Sentence14: There are two places that fit your criteria. Alexander Bed and Breakfast and El Shaddai. Which are you interested in? Question: Who has spoken the sentence 6? (A) User (B) System

Solution: Answer: (A) User