Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I'm sorry. That booking was unsuccessful. Would you like me to try another time or another restaurant? Sentence2: That sounds good. I would like a reservation for 6 people at 19:45 on Sunday. Sentence3: I have a listing for Cambridge lodge restaurant that serves British food,can I book you a table there? Sentence4: I don't have a preference. Sentence5: There are 9 restaurants that meet that criteria. Is there a type of cuisine you would prefer? Sentence6: I need to find a restaurant in the west area and more on the expensive side. Sentence7: Is there another restaurant available at that time in the same area and price range? Sentence8: Yes, I can book you at Graffiti. The reference number is UYW8JK6T . May I help with anything else? Sentence9: Good day. Sentence10: I think that is all, thank you, cheers. Question: Who has spoken the sentence 7? (A) User (B) System
Output:
Answer: (B) System