You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: I have several choices for expensive Chinese food. Can I recommend tang chinese? It is in the centre of town. Sentence2: Sure! It is a museum in the centre and is free to enter. The phone number is 01223311687. Is there any other information you would like? Sentence3: You're welcome. I hope you enjoy the museum! Sentence4: I'd like information about an attraction called Williams Art and Antiques. Can you help me with that? Sentence5: Yes, it is 01223357187. Would you like me to make reservation? Sentence6: That sounds perfect. Can you tell me their phone number? Sentence7: No problem! I hope you enjoy your day! Sentence8: Not at this time, but thank you. I appreciate your help. Sentence9: No, thank you. Sentence10: I am also looking for a place to eat in the expensive price range that serves chinese, can you help me with that too? Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User