You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I have many to choose from. What area do you prefer? Sentence2: No specific area but i do need free wifi and need it to be in the moderate price range. Sentence3: Our reunion is on Tuesday so I want to leave that day. Sentence4: Kings lynn. Please give me the price, travel time, and train ID Sentence5: Can you help me find a train going to cambridge leaving after 21:15? Sentence6: Thank you for using our system today! Sentence7: The TR9704 train leaves Kings Lynn at 22:11. The travel time is 47 minutes. The price is 9.80 pounds. Do you know the area you'd like to stay? Sentence8: Great! I can help you with that. Where would you like to leave from? Sentence9: it doesn't matter book a room for 3 for 1 night the same day, and I'll need the reference number too please Sentence10: That's all I need, thank you so much! Have a nice day! Sentence11: I have two lines. 22:11 is the closest to your departure. Does that work for you? Sentence12: There are 11 locations, would you prefer one with parking included? Sentence13: Sounds good to me. Oh, and I'm also looking for a place to stay. Sentence14: Thanks so much that is great. Sentence15: No, area doesn't matter. I do want a 4 star guesthouse though. Sentence16: sure, do you know what day you're traveling? Sentence17: I will certainly use Cambridge TownInfo again. Goodbye. Sentence18: Okay i booked you at the Acorn and your reference number is G5FTA5L5 . Question: Who has spoken the sentence 2? (A) User (B) System
Output:
Answer: (A) User