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 would like it to serve food from the americas. Sentence2: 'Hotel du vin and bistro' and 'galleria' Sentence3: Certainly, can I book your table at hotel du vin and bistro or would you prefer a table at galleria? Sentence4: i have booked you a taxi, red tesla, phone number is 718 850 4433. Sentence5: Thank you have a great day. Sentence6: Do they offer free parking? And can I get the phone number for them please. Sentence7: There are 2. Did you want me to book one of them? Sentence8: Your table has been booked and is reserved for 15 minutes, reference number is M32YYIJN . Can I help you with anything else? Sentence9: Yes, there is free parking at Hamilton Lodge. The phone number is 01223365664. Sentence10: How about european food? Sentence11: Is it possible to arrange a taxi to take me from the hotel to the restaurant by 16:00? Sentence12: I have the information pulled up. What would you like to know about it? Sentence13: I need to book a table for 3 people at 16:00 on friday at galleria Sentence14: I would like to book a table for three on Friday, at 16:00. Sentence15: I'm also looking for a hotel called hamilton lodge. Sentence16: There are many moderately priced restaurants that meet your criteria, what type of food are you looking for? Sentence17: What are the names? Sentence18: Thank you that's all that I needed Sentence19: I am looking for a restaurant in the moderate price range in the centre of town. Sentence20: Unfortunately I could not find any restaurants serving food from the Americas in the moderate price range. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example 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
Example Output: Answer: (B) System

Example Input: Sentence1: Actually, type does not matter. But I want somewhere with 4 stars and wifi in the south please Sentence2: Yes, I would like that place. Can you give me the phone number, entrance fee, and address? Sentence3: The aylesbray lodge guest house is a great place to stay. Shall i book it for you ? Sentence4: Good bye have a nice stay. Sentence5: Great, can you get me the postcode, phone number and price range? Sentence6: Yes, the postcode is cb17sr. The phone number is 01223240089 and its moderately priced. Sentence7: Are there any entertainment attractions in the centre of the city? Sentence8: There are 44. Is there a certain type you prefer? Sentence9: Yes can you find a restaurant for me to eat at? Sentence10: Preferably a hotel if possible. Sentence11: I would recommend castle galleries. Sentence12: Do you need a hotel or guesthouse ? Sentence13: What type of restaurant are you looking for? Sentence14: Thank you, goodbye! Sentence15: How about a museum? Sentence16: Yes it does have 4 stars. Enjoy your travels! Sentence17: Does the hotel have free parking? Sentence18: Castle Galleries is located at unite su43, grande arcade, saint andrews street, 01223307402 and it is free. Can I help you with anything else? Sentence19: As long as it has 4 stars, that is all I need today, thanks for your help. Sentence20: To help narrow down the results, what area or price range are you looking for? Sentence21: I don't need to find a restaurant actually. I instead need a place to stay. Sentence22: Yes, it has free parking Question: Who has spoken the sentence 9? (A) User (B) System
Example Output:
Answer: (B) System