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

Ex Input:
Sentence1: No that will be all! Thank you very much! Sentence2: Done! Your table will be reserved for 15 minutes. Your reference number is 5XFZM2KU . Is there anything else that I can help you with? Sentence3: Sure, they are all expensive though. I love Tandoori Palace located at 68 Histon Road Chesterton. Sentence4: Is there anything else you need? Sentence5: They do not have an entrance fee listed, but you can always call and find out. Sentence6: Thank you for using our services. Have a great day! Sentence7: Okay, thank you for your help! Sentence8: Nevermind - I don't need the taxis after all. Can you help me find a place called tenpin, instead? Sentence9: Can you book a reservation for 8 at 14:45 on Friday? Sentence10: Can you provide me with the telephone number and book two taxi cabs to the restaurant Sentence11: Can you tell me what their entrance fee is? Sentence12: is there anything else i can help you with? Sentence13: Tandoori Palace's phone number is 01223506055. Please give me the taxi departure day and time and I'll be more than happy to book one for you Sentence14: Can you help me find a indian restaurant in the west? Sentence15: Tenpin is an entertainment venue in the south. They are located at Cambridge Leisure Park, Clifton Way. Their postcode is cb17dy. Their phone number is 08715501010. Sentence16: That sounds perfect! Thank you. Question: Who has spoken the sentence 15? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Two for the same day. I need a taxi to commute between the two places to be sure it arrives by the booked time. The contact number and car type? Sentence2: I was able to book your table. Your reference number is : OSAGFN8W . Sentence3: Yes, that is correct. Is there anything else I can help you with? Sentence4: i am looking for information in Cambridge. A a place to dine. Sentence5: How many people will be staying with you and what day would you like to reserve your hotel room? Sentence6: book the one in the centre a table for 2 at 13:45 on thursday Sentence7: which side of town and what is the price range? Sentence8: There are 21 great places to choose from. Do you have a certain type of restaurant you are looking for? Perhaps Italian or European? Sentence9: Thank you. I will also need a hotel in that same area. Please, no guesthouses! Sentence10: Cityroomz has a 0 star rating with free internet, but does not provide parking. Would you like to make a reservation? Sentence11: I have the hotel and the taxi already? Sentence12: Yes, please. For 2 nights. Sentence13: you too have a great day Sentence14: Thanks, Those are all i need for today. Sentence15: Thank you so much. Sentence16: Let me know about your Italian restaurants. Sentence17: I want to eat Thai food. Sentence18: There are 3 options for hotels in the centre. There is one 0 star, one 3 star and one 4 star option. Which would you prefer? Sentence19: Your room is booked, ref #DOSETWFU, and a red Audi will pick you up and get you to the restaurant for that reservation. Contact number 07840525996. Sentence20: There aren't any Thai restaurants in that price range in the centre of town. Would you like to try something else? Sentence21: Moderately priced, in the centre of town. Sentence22: I want the place with 0 stars. Sentence23: You're welcome. Have a great day. Sentence24: Okay, I found two options for you: Pizza Express and Pizza Express Fen Ditton. Do either of those appeal to you? Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Reference number is LFBB6YNO . Sentence2: Will the taxi be picking you up at the hotel or at the museum? Sentence3: I also need a taxi to commute between the two places. Sentence4: Your taxi is booked. Look for a blue ford, their contact number is 07211297115. Is there anything else I can help you with? Sentence5: I can recommend the City Centre North B and B. It is in the cheap price range. Would you like me to book that for you? Sentence6: What is your price range? Sentence7: I do not. Can you recommend one? Sentence8: The Broughton house gallery is in the centre. It's postcode is cb11ln. The phone number is 01223314960. Is there anything else I can help you with? Sentence9: Any range is fine but it needs to include free wifi and parking. Sentence10: If you need anything fell free to call us. Sentence11: I need picked up at the hotel by 9:15 please. Sentence12: Thank you and Goodbye, Sentence13: No, that is wonderful. Have a nice day and thank you. Bye. Sentence14: Hi, I'll be traveling to cambridge and am excited to find some places to go. Can you help me? Sentence15: im looking for a museum in the centre. may i also have the postcode and phone number for them as well? Sentence16: I also need to book a guesthouse in the north. Sentence17: You're welcome! Thanks for contacting Cambridge TownInfo centre! Sentence18: I will be more than happy to assist you. Please tell me what kind of attractions you are interested in? There are many categories of attractions in the Cambridge area. Sentence19: Sure. I'll need rooms for 4 people reserved for 4 nights, beginning Saturday. Can I have the reference number for that booking? Sentence20: Okay, I have 9 guesthouses that fit your needs. Are you looking for a particular star rating? Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:

Answer: (B) System