You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: I recommend Castle Galleries. Sentence2: No, Castle Galleries is free to enter! Sentence3: If that is all, I would like to thank you for using our service. Sentence4: Does Castle Galleries have an entrance fee? Sentence5: Yes, I would like to go to the Sesame Restaurant and Bar. I would need to book a taxi to get from the museum to the restaurant. Sentence6: Great, wonderful! That's all I needed. Sentence7: I am looking for places to go here in the centre of town. Could you please assist me? Sentence8: I have the Sesame Restaurant and Bar that is a more expensive Chinese restaurant also located in the town centre. Would you like more information or I also have others? Sentence9: It doesn't matter, whatever you recommend will be fine. As long as it's in the same area as Castle Galleries and serves Chinese food. Sentence10: I would like to go to a museum please. Sentence11: What kind of place? Are you looking for entertainment, dinner, culture, or what? Sentence12: Would you like a cheap, moderate, or expensive restaurant? Sentence13: Wonderful. I am also looking for a Chinese restaurant near the Castle Galleries. Can you book me a table for 7 people on Sunday at 12:30? Sentence14: I have booked you a blue toyota taxi and its contact number is 07271370296. Question: Who has spoken the sentence 5? (A) User (B) System
A:
Answer: (B) System