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: That is all I need, thank you. Sentence2: Okay, I can help you with that. We have several great moderately priced restaurants. What type of food would you like? Sentence3: Booking was successful. The table will be reserved for 15 minutes. Reference number is : R73U0ESJ . What else can I do for you today? Sentence4: Okay. Could you book that for 3 people for Sunday at 15:00. Sentence5: Do you have any Lebanese restaurants? Sentence6: You're very welcome. Good-bye. Sentence7: We have ali baba which is lebanese Sentence8: I need to find a moderately priced place to dine in the centre please. Question: Who has spoken the sentence 6? (A) User (B) System
Output:
Answer: (A) User