Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: There are no restaurants matching your request. May I help you find a different restaurant? Sentence2: I have four restaurants matching your request, would you like to hear them all or narrow your request? Sentence3: I'm looking for an English restaurant that's moderately priced.. Sentence4: Okay, then I'm looking for a restaurant with Chinese food that's moderately priced. Question: Who has spoken the sentence 1? (A) User (B) System
A:
Answer: (B) System