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

Example Input: Sentence1: Unfortunately, I am not seeing any 4 star hotels that are moderately priced in the centre. We could try a cheaper hotel or a guesthouse? Sentence2: Sure do. Their address is fulbourn, postcode cb15dh. Phone number is 01223295264, and entrance is free. It's a museum on the Eastside. Sentence3: Nevermind. Do you have info on gallery at twelve a high street. Sentence4: Thank you very much for your help, have a nice day. Sentence5: Thank you, enjoy your stay in cambridge. Sentence6: Of course. We have so many attractions! What part of town will you be in? Sentence7: I will be visiting Cambridge soon and can't wait to see some of your local attractions. I do need your help with some information. Sentence8: I'm sorry, but there are no cheap hotels in the center of town, either. The only cheap hotel is on the west side. Sentence9: How about in the cheap price range? Sentence10: I have two options. Would you prefer a hotel or a guesthouse? Sentence11: I need a 4 star room in the centre please. Sentence12: A hotel in the moderate price range. Thank you! Question: Who has spoken the sentence 4? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: I am planning a trip in Cambridge Sentence2: I found the express by holiday inn cambridge. It is a 2 star expensive hotel free parking and internet. The address is15-17 norman way, coldhams business park. Sentence3: Where will you be departing from? Sentence4: Thanks! i'm also looking for a place to stay in the east. Sentence5: I need to first find out what train will take me away after I am done. I need to get to Peterborough on Sunday by 21:45 Sentence6: Departing from Cambridge. I need the departure time, train ID and price. Sentence7: Okay, we've got a few options. The best looks like train TR6958 that leaves Cambridge at 20:34 and arrived in Peterborough at 21:24. The price is 13.2 pounds. Sentence8: That sounds like fun! What information can I help you find? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: The first train available leaves at 09:54 and arrives at 10:43. Will that work? Sentence2: The price is 12.80 pounds. Sentence3: I am looking for a place to stay that has free wifi and is in the expensive price range. Sentence4: I think so, but can you confirm the price first? Thank you. Sentence5: I have five hotels that all fit that criteria. Anything else you're looking for in a hotel or should I just book one of those for you? Sentence6: I also need a train departing from Stevenage leaving after 08:45 Sentence7: There is also a train that leaves at 07:54, would you like that one? Sentence8: What is your destination? Sentence9: Thank you for using our system today! Sentence10: I just need to have free parking. Sentence11: OK, thank you. That is everything that I need. Sentence12: Yes, the price is still 12.80. It arrives at 8:43. Sentence13: There are 5 hotels that meet your criteria. Do you have a preference on what area of the city you'd like to stay in? Sentence14: I don't need it booked. Can I get the phone number and address of an expensive hotel with free wifi and parking? You choose. Sentence15: The phone number for Gonville is 01223366611, and the address is gonville place Sentence16: Cambridge on Friday. Sentence17: Is there any earlier arrival times? Sentence18: Could you please give me the arrival time and confirm that the price is still 12.80 Question: Who has spoken the sentence 10? (A) User (B) System
Example Output:
Answer: (A) User