Given the task definition and input, reply with output. You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: anatolia and efes restaurant are moderately priced, while meze bar restaurant is expensive. Sentence2: What is the price range? Sentence3: address for anatolia please Sentence4: anatolia is located at 30 bridge street city centre. Is there anything else I can help you with? Sentence5: You're looking for Turkish food, correct? Sentence6: Is there anything else? Sentence7: I want turkish food. Sentence8: Yes, there are three restaurants serving Turkish food in the center of town. Sentence9: I find 3 restaurants matching your request. Sentence10: Yes. Are any of those restaurants in the centre of town? Sentence11: The address for which restaurant? Sentence12: That's all I need, Thanks. Sentence13: What is the address? Sentence14: You're welcome and thank you for using this system. Goodbye. Question: Who has spoken the sentence 11? (A) User (B) System
Answer: (B) System