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 don't care, I want to book a table for 5 people at 13:00 on saturday. Sentence2: You're welcome! Bye now! Sentence3: Thank you for your help Sentence4: I am looking for a restaurant. The restaurant should be in the west and should be in the expensive price range Sentence5: Thanks for your help. Sentence6: Yes, I have nine possibilities fitting those parameters. Is there a specific type of food you're looking for? Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 3AYRGABE . Sentence8: Great! Have a nice day! Question: Who has spoken the sentence 2? (A) User (B) System
Output:
Answer: (A) User