You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Example Input: Sentence1: I'm looking for an expensive restaurant in the center of town. Sentence2: Certainly. When would you like your taxi to depart? Sentence3: Is there any Turkish cuisine? If so I need the postcode and the address. Sentence4: No, that will be all, thank you! Sentence5: I need to arrive at Cambridge Contemporary Art by 19:15 please. Sentence6: Okay, have a nice day. Sentence7: I don't really care, what do you recommend? I will need the postcode and entrance fee please. Sentence8: I am also looking for museums in the area. Sentence9: How about Cambridge Contemporary Art? The entrance is free and the postcode is cb21su. Enjoy! Sentence10: There are many museums listed in the centre area, what kind of museum are you interested in? Sentence11: No problem. Your taxi has been reserved. Your driver's contact number is 07035811281 and will be driving a grey toyota. Is there anything else you need today? Sentence12: Thank you. I would also like a taxi to commute between the two places. Sentence13: There are many expensive restaurants in the centre of town, is there a specific type of food you would like? Sentence14: The Meze Bar restaurant matches your tastes. It is located at 196 Mill Road City Centre. The postcode is cb13nf. Question: Who has spoken the sentence 10? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: You're very welcome! Is there anything else that I can help you with today? Sentence2: That is all I will need. Thank you for your help! Sentence3: Please book for 4 people at 17:00 on Sunday Sentence4: Thank you for all your help. Sentence5: I need a restaurant. The restaurant should serve indian food and should be in the expensive price range. Sentence6: I will be departing from my house. Sentence7: Pipasha Restaurant fits all of your criteria. Would you like to book a stay? Sentence8: Yes, I'd like a taxi to take me to Pipasha Restaurant and then to Cambridge Punter. I'd like to arrive at Pipasha Restaurant by 17:00. Sentence9: There are 14 expensive indian restaurants in the city. Do you have a preference of location? Sentence10: I am also interested in attractions in the centre. Specifically, I am interested in multiple sports facilities Sentence11: Your table for 4 has been booked. The table will be reserved for 15 minutes. Your reference number is 8OZ8ZF5G . Do you need anything else? Sentence12: The Cambridge Punter looks like a good choice. Want more information? Sentence13: Actually I'll be at the Cambridge Punter, pick me up there. Sentence14: Yes.East-Side London. Sentence15: How about an attraction that has to do with boats? Sentence16: The phone number to the cambridge punter is 07807718591. Do you require assistance with anything else. Sentence17: I have none available in the centre. Would you like a different area or attraction? Sentence18: You are welcome. Please call us back if we can help you any further. Sentence19: What is the address of your house so I can book the taxi? Sentence20: I just need to know where you will be departing from at first to the restaurant. Sentence21: No problem. Your taxi is booked. The car is a red tesla and the contact number is 07610839736. Anything else I can help you with? Sentence22: Yes, can I get the phone number? Question: Who has spoken the sentence 17? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: That sounds great, thanks! Sentence2: We have two options that meet your criteria. Both have free parking and wifi. I would recommend Ashley Hotel. Will that work for you? Sentence3: You're welcome! Have a great trip! Sentence4: No that's all I need for now. Thank you! Sentence5: On what day do you need to travel from cambridge to stansted airport? Sentence6: Thank you! I'm also looking for a place to stay in the north. I'll need it to have a star of 2. Sentence7: Thank you so much! Goodbye. Sentence8: Okay! What is your destination? Sentence9: Actually, I am not ready to book yet. But, can you please tell me the phone number and postcode? Sentence10: Would you like me to book it for you? Sentence11: I would like to go to Stansted Airport, please. Sentence12: sure phone is 01223350059 and the postcode is cb41er, anything else today? Sentence13: Bye for real this time! Sentence14: I need to travel on Friday. Could you give me the travel time, price and train ID? Sentence15: I need a train departing from cambridge arriving by 17:45. Sentence16: Yes the train that departs at 16:40 has an ID of TR7062, and a travel time of 28 minutes and a price of 10.10 pounds. Question: Who has spoken the sentence 5? (A) User (B) System
Example Output:
Answer: (B) System