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

Example Input: Sentence1: Your table is booked (ref# SCHAG4OI). What time do you need that taxi? Sentence2: The phone number is 01223240089, and the post code is cb17sr. Is there anything else I can assist you with? Sentence3: Thanks. That is all for now. Sentence4: Aylesbury odge guesthouse,I will book it for you,is there anything else I can do for you ? Sentence5: Are any a guesthouse? Sentence6: Okay. Please call us if we can help you further. We hope you enjoy your stay. Sentence7: the good luck chinese food takeaway is great. Shall i book it ? Sentence8: No I just need you to recommend one for me. Sentence9: I don't need you to book it, I just need the phone number and post code please. Sentence10: Hello, I am looking for a place to stay that has free parking in the South area. Can you help me with that please? Sentence11: What time would you like to dine, and how many will be in your party? Sentence12: Thanks, also looking for a restaurant in the same part of town in the expensive range. Can you recommend one? Sentence13: I'd like it to arrive in time to get us there before 12:15. Sentence14: Yes I have 3 guesthouses matching your criteria. Would you like to book one of them? Sentence15: Your black ford taxi has been booked and your contact number is 07103139053. Sentence16: I have four options ranging in price from cheap to expensive ranging in from 3 to 4 stars. Sentence17: There will be 6 of us. We'd like 12:15 on Saturday please. Sentence18: Please book the restaurant and I also need a taxi. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Is there any Indian food on the west side of town. Sentence2: You're welcome. May I help with another query? Sentence3: Cocum is located at 71 Castle Street City Centre and their phone number is 01223 366668. Their price range is expensive. Sentence4: The price range doesn't matter. Sentence5: There are 6 Indian restaurants in the west part of town. What price range do you have in mind? Sentence6: There are no Hungarian restaurants in the west of town. Would you like to change your query? Sentence7: I would like a Hungarian restaurant in the west of town. Sentence8: Yes, but just for one. Sentence9: Would you like the name, address and phone number of a few of them? Sentence10: Goodbye. Sentence11: Thank you! Sentence12: Nope, I'm good. Thanks again. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Find me a modern european restaurant in the south. Sentence2: I would like to arrive at the restaurant in time for my booking. Sentence3: What is the post code, area of town, and type of attraction? Sentence4: do you know where castle galleries is Sentence5: The post code is cb23bj, it is in the centre of town, and it is a museum. Sentence6: Yes it is. Would you like me to book it for you? Sentence7: Yes, book for 7 people at 15:30 on friday please. Sentence8: I have booked a grey Volvo for you. The contact number is 07114144706. Is there anything else I can do for you? Sentence9: Is it in the moderate price range? Sentence10: I also need a taxi, to go between the two places. Sentence11: Yes, I was able to book your party at 14:30. Your reference number is 7H21OO6L . Please note the table will be held for 15 minutes. You need anything else? Sentence12: I found Restaurant alimentum that fits your needs. Would you like me to book that for you? Sentence13: Yes, the address is unit su43, grande arcade, saint andrews street. Sentence14: Glad to have been of help. Take care. Sentence15: Well how about 14:30 then? Sentence16: No thanks. I think that was all. Have a good day. Bye. Sentence17: Sure! When would you like to leave and arrive by? Sentence18: I'm sorry, that isn't available for that time slot. Can you change it perhaps? Question: Who has spoken the sentence 14? (A) User (B) System
Example Output:
Answer: (A) User