Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I would like to book it for Thursday for 8 people for 13:45. Sentence2: No, it should be in the moderate price range and include free wiki, though. Sentence3: Can I help with anything else today? Sentence4: Yes, can you book for 8 people, 3 nights, starting on thursday. Sentence5: what about the one on the cheap range? Sentence6: Nope, that's it, thanks! Sentence7: Yes I have two options for you. Would you like to book one of these? Sentence8: I'm visiting cambridge and I need a place to stay. I'm looking for a 0 star guesthouse. Sentence9: thanks i'm also looking for a restaurant. Sentence10: Thank you so much! Sentence11: Booking was successful. The table will be reserved for 15 minutes. Reference number is : KUWF73DZ . Sentence12: What day would you like to book that for? Sentence13: I'd be happy to help you. What kind of cuisine are you wanting to try? Sentence14: I'm so sorry but we don't have anything that exactly matches that. Since you want a 0 star how about a cheap guesthouse called el shaddai in the centre? Sentence15: Glad I was able to help you. Have a good day. Sentence16: I have made a booking for you for city centre north b and b. Your reference number is K9NGVLIT . Sentence17: I have two options. One in the north and one in the center. Do you have a preference? Sentence18: i am actually looking to book a restaurant called riverside brasserie. Question: Who has spoken the sentence 16? (A) User (B) System
Output:
Answer: (A) User