Q: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Sentence1: Their address is Grafton Hotel 619 Newmarket Road Fen Ditton Sentence2: I don't have a preference. Sentence3: Would you prefer British, Indian, or Chinese food, or a gastropub? Sentence4: You're welcome. Goodbye! Sentence5: I need the address of an expensive restaurant in the east part of town. Sentence6: Yes, please give me their address. Sentence7: The grafton hotel restaurant serves british food, is in the east part of town and is in the expensive price range. Would you like their location? Sentence8: thank you, goodbye. Question: Who has spoken the sentence 4? (A) User (B) System
A:
Answer: (A) User