You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Your table is booked and is reserved for 15 minutes. Your reference number is I9AKFZC5 . Can I help you with anything else today? Sentence2: Is that one expensive? I would like an expensive, 4-star hotel. Sentence3: Okay there are many to choose from. Do you have a preference for the area you stay in? Sentence4: Alexander bed and breakfast is located in the centre which is close to the hotel. Would you like me to book you a reservation here? Sentence5: No. Thank you, you have been very helpful. Sentence6: I would like a table for 1 at 18:15 on Tuesday at the Bedouin, please. And may I have the reference number when it's booked? Sentence7: Thank you for your help. Sentence8: Thank you good bye. Sentence9: Okay, I've booked you for one person at University Arms, starting on Tuesday, for 4 days. Your reference number is HSVG3GT9 . Sentence10: No that is a cheap hotel but is rated 4 stars. How about the university arms hotel, its is 4 stars and expensive. Sentence11: How about near the restaurant? Sentence12: I'm happy to have assisted you. Is there anything else I can do for you today? Sentence13: What are some nice, expensive restaurants in the center of town? Sentence14: I would like to get the taxi to get me there by 18:15 please Sentence15: I was able to book a black ford phone number is 07618987553 Sentence16: I can do that, when would you like the taxi to pick you up? Sentence17: Sounds great! Please book a 4 night stay for 1 person on tuesday. Sentence18: The Bedouin, Kymmoy & Midsummer House Restaurants match your desired criteria, would you like me to book you a table? Sentence19: Yes I also need to book a taxi to take us between the hotel and the restaurant. I will need the car type and a contact number for the booking. Sentence20: Yes I need a hotel with free wi-fi. Sentence21: I am happy to help Sentence22: Goodbye and take care! We hope to see you again. Question: Who has spoken the sentence 9? (A) User (B) System
Output:
Answer: (B) System