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 want a hotel close to Backstreet Bistro. Not too expensive. Sentence2: Unfortunately, I am unable to book at this time. Would you like the number? Sentence3: I want to find a nice, expensive place to dine in the centre. Sentence4: I want a place that serves astropub Sentence5: Yes book room for 2 starting Wednesday for 5 nights and get me reference number. Sentence6: Are there any expensive hotels in that area? Sentence7: Great, thank you. I'm good to go now. Bye! Sentence8: The booking system is back up, so I went ahead and completed the reservation for you at Cityroomz as requested. Your reference number is ORTE2F27 . Anything else? Sentence9: Yes, for 2 people at 11:45 on wednesday Sentence10: What area of town are you looking to stay and what price range are you looking for? Sentence11: Cityroomz is the only moderately priced hotel in the centre of town with free WiFi. Can i book a room for you? Sentence12: Backstreet Bistro is my favorite. They're located at 2 Sturton Street City Centre, cb12qa. Would you like to book a table there? Sentence13: Booking was successful. The table will be reserved for 15 minutes. Reference number is : WV7CR016 . Sentence14: i have 33 to choose from. what is your prefered type of food? Sentence15: The booking system is not working at this time. Sentence16: I'm glad we could help. Have a great day. Sentence17: Could you retry, only starting on Wednesday? Sentence18: Thanks. I'm also looking for a hotel with free wifi. Question: Who has spoken the sentence 17? (A) User (B) System
Output:
Answer: (B) System