Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Sure thing!. There are 69 restaurants in the centre. Is there a specific cuisine or price range you're looking for? Sentence2: I have found 9 Indian restaurants. Do you have a price range in mind? Sentence3: Excellent. That's all I need. Sentence4: Great! Is there anything else I can assist you with? Sentence5: Not really. But I am also interested in finding some architecture to look at. Sentence6: The church is in the centre area, its phone number is 01223452587, and the entrance fee is free. Sentence7: Hello! Can you help me find a restaurant somewhere in the center of Cambridge please? Sentence8: Yes, I'm looking for an indian restaurant. Sentence9: Thank you and have nice visit. Sentence10: No, that will be all today. Sentence11: May I get the area of the church, phone number, and entrance fee? Sentence12: I recommend the All Saints Church, located in the centre. Would you like more information? Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User