Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: No, that's it. Thanks. Sentence2: That sounds great! Can I book a talbe for 7 people at 17:30 on Wednesday? Sentence3: Eraina is an expensive European restaurant in the city centre, would you like me to book that for you? Sentence4: Can you help me find an expensive restaurant in the town centre? Sentence5: Thank you for contacting us. Have a great day. Sentence6: I was thinking maybe trying something european. Sentence7: There are many high class restaurants in town centre, is there a particular cuisine you'd prefer? Sentence8: Your booking was successful. The table will be reserved for 15 minutes. The reference number is 0UD63QC0 . Can I assist you with anything else today. Question: Who has spoken the sentence 7? (A) User (B) System
Output:
Answer: (B) System