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 need a train departing from london liverpool street. Sentence2: I will need it on Friday and intend to arrive by 12:00. Sentence3: Thanks. Thats all I needed. Goodbye. Sentence4: ballare has a 5 pound entrance fee. Sentence5: Thank you for choosing the Cambridge TownInfo Centere. I hope you use us again. Sentence6: I would like to travel on Friday. Sentence7: The TR0637 will get you into Cambrdige by 11:07. Will that work for you? Sentence8: I'm trying to find a nightclub in the centre of town. Sentence9: Sure, I can help you with that. What day were you wanting to travel? Sentence10: may i have the train ID and price please ? Sentence11: What day and time would you like to travel? Sentence12: You already have the Train ID from previous conversations, but the price is 16.60 pounds. Sentence13: Could you give me a recommendation as well as the entrance fee? Sentence14: We have 5 nightclubs located in the centre of town. Are you looking for a particular nightclub or do you want a recommendation? Question: Who has spoken the sentence 2? (A) User (B) System
Output:
Answer: (A) User