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

[EX Q]: Sentence1: Can you recommend a moderately priced restaurant in the South part of town? Sentence2: could i have the address and phone number please? Sentence3: sure, pizza hut cherry hinton is located at G4 cambridge leisure park clifton way cherry hinton and the phone number is 01223 413000. Is there anything else I can help you with? Sentence4: Would you prefer Italian or Modern european food? Sentence5: I don't care. Either one is fine. Sentence6: No, that is all I needed. Thank you. Bye bye. Sentence7: How about Pizza Hut Cherry Hinton. It serves Italian food, is in the moderate price range, and in the south part of town. Sentence8: Goodbye. Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: 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
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Thank you. That's all I needed. Sentence2: What is the postcode? Sentence3: I have confirmed booking for 2, the total fee is 20.48 GBP payable at the station. Your reference number is MRVAFSWE . Would you like help finding anything else? Sentence4: I also need to find an attraction called kings hedges learner pool. Sentence5: That is all, thank you very much for the help! Sentence6: The Parkside Police Station phone number is 01223358966 located Parkside, Cambridge CB11JG Sentence7: I need to take a train out of Cambridge on Sunday. Sentence8: I would like to go to Stevenage after 08:00 please. Sentence9: TR6488 leaves at 09:21 and gets to Stevenage by 10:10. Will that train work for you? Sentence10: kings hedges leaner pool is located at jedburgh court, kings hedges. their phone number is 122 335 3248. Sentence11: Okay. I am glad I could be of assistance. Sentence12: Can I make a reservation for 2 people and get a confirmation number? Sentence13: Okay. What's your destination? Sentence14: The swimming pool's postcode is cb42xh. Do you need any more information? Question: Who has spoken the sentence 2? (A) User (B) System
[EX A]:
Answer: (A) User