You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Thank you so much, that is all. Sentence2: Ok! Your table for 2 at the Varsity Restaurant has been booked for Tuesday at 20:00. You reference number is: 1EB89A0F Sentence3: The Varsity is a moderately priced restaurant offering international cuisine. Would you like any other information? Sentence4: I am looking for information on The Varsity restaurant. Sentence5: You're welcome. Goodbye! Sentence6: Could you book me a table for 2 at 20:00 on Tuesday evening? Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User