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: You're welcome. Goodbye. Sentence2: What is the phone number please? Sentence3: No that will be it. Thank you Sentence4: Is there a cheap place in the north part of town? Sentence5: da vinci pizzeria is in the north part of town their address is 20 Milton Road Chesterton. Sentence6: da vinci pizzeria's phone number is 01223351707. Can I help you with anything else? Sentence7: Italian, please. Can you give me the address? Sentence8: There are two restaurants that meet your specification. One is Italian and the other is Indian. Which would you prefer? Question: Who has spoken the sentence 6? (A) User (B) System
Output:
Answer: (A) User