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

Input: Consider Input: Sentence1: book a table for 6 people at 11:15 on tuesday at the Hakka Sentence2: Sure what type of food are you wanting to eat? Sentence3: Do they have free wifi? Sentence4: I booked the taxi, it is a yellow tesla the contact number is 07809860598. Is there anything else I can assist with today? Sentence5: I will need a taxi to get to the restaurant. Sentence6: Booking was successful, and your reference number is TDVD6XSM . Is there anything else I can assist you with? Sentence7: That is all, thank you for your help. Sentence8: The Hamilton Lodge sounds perfect for you. Would you like to know more? Sentence9: I'm glad we were able to help. Sentence10: I would like to find an expensive restaurant in the north part of Cambridge. Sentence11: Yes, they do have internet. Shall I make a booking? Sentence12: There 2 of them - the Hakka and the hotpot. Which one would you like to try? Sentence13: Yes please. I want 4 nights from tuesday, and for 6 people. Give me the reference number too. Sentence14: I am looking for a hotel in the same area that has free parking. Sentence15: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 48WF5G7X . Can I help with anything else? Sentence16: How about chinese food? Question: Who has spoken the sentence 15? (A) User (B) System

Output: Answer: (B) System


Input: Consider 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

Output: Answer: (B) System


Input: Consider Input: Sentence1: Nice! Okay, that should be all I need. Thanks for your help and goodbye! Sentence2: I'm sorry for the confusion, what attraction are you interested in the entrance fee for? Sentence3: Can I get the phone number, postcode, and address? Sentence4: I enjoy museums. We have old schools. Would you like more information on that one? Sentence5: Great! have a wonderful trip! Sentence6: Good news! It is Free. Sentence7: We have 11 different museums in the centre, if you're not looking for a particular one, might I recommend the Primavera? Sentence8: Yes, how much does it cost to get in? Sentence9: Hm. That isn't it. I think it is called city centre north. Can you search again please? Sentence10: 01223312843 is the phone number cb43ht is the postcode and 328a histon road is the address. Sentence11: I am looking for a specific hotel by the name of city centre north b and b. Could you provide me with some additional information about this place? Sentence12: Did you by chance mean the A and B guesthouse? Sentence13: I'm looking for a fine arts museum in the centre. Sentence14: Thanks I'm also looking for a fun attraction to go in the centre. Can you make a recommendation? Sentence15: I found it. It is a cheap guesthouse in the north. The phone number is 01223312843. Sentence16: Okay. Can you tell the entrance fee? Question: Who has spoken the sentence 12? (A) User (B) System


Output: Answer: (A) User