You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Hello, I am looking for a restaurant on the west side of town that serves kosher food. Sentence2: The phone number for prezzo is 01799 521260. Sentence3: What is the phone number for prezzo? Sentence4: Ok, how about an Italian restaurant? Sentence5: There are no restaurants matching your request. May I help you find a different one? Sentence6: thank you, goodbye. Sentence7: Thank you, goodbye Sentence8: There are two Italian restaurants in the west area. la margherita is in the cheap price range. prezzo is in the moderate price range. Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User