Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: The booking was successful. The table will be reserved for 15 minutes. Reference number is : UM6YO5NS . Sentence2: Yes, can you book a table for 5 for Monday at 16:15? Sentence3: ok, provide reference number too please. Sentence4: Which of the two restaurants is in the north? Sentence5: Yes, I can book the table for you. Sentence6: There are two restaurants that meet that criteria. May I suggest Kymmoy? Sentence7: Saigon City is in the North. Do you need a booking for that? Sentence8: I want to dine at an expensive asian oriental food restaurant. Question: Who has spoken the sentence 3? (A) User (B) System
Output:
Answer: (B) System