Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: Great, thanks for all of your help! You have been wonderful! Sentence2: What is the post code, address, and entree fee? Sentence3: I don't have any Cantonese restaurants in the centre. I could try another cuisine or another area? Sentence4: What other local attractions are there to explore? Sentence5: There is one of those- it is called wagamama. Would you like to make a reservation? Sentence6: Your table is reserved. The reference number is BS73EYWV . Sentence7: The postal code is cb11ln, address is 98 King Street, and the entrance is completely free. Sentence8: You're very welcome! Text us back anytime, and have a wonderful visit in Cambridge! Sentence9: I have booked you a black volvo. The contact number is 07018935922. How else may I assist you today? Sentence10: There are several. Vue Cinema is a popular attraction. Would you like the address? Sentence11: Sure. Book it for 4 people at 11:45 on a saturday. Sentence12: Actually, I'm in the mood for Cantonese food. Are there any like that? Sentence13: Hello! This is my first time to Cambridge, can you recommend a good, expensive restaurant in the centre? Sentence14: That sounds good. I also need to book a taxi to go from the Vue to the restaurant by my booked time. Sentence15: There are 11 found. how about the broughton house gallery? Sentence16: No I would prefer a museum. Sentence17: Do you want British food? If so, the Cambridge Chop House is popular. You are in luck as there is a wide range of options. Sentence18: OK. How about an expensive Japanese restaurant? I'd like to treat myself! Question: Who has spoken the sentence 7? (A) User (B) System
A:
Answer: (B) System