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

Ex Input:
Sentence1: Yes, please book this. Sentence2: I found 4 restaurants, would you like to try Cotto? Sentence3: Thank you, can I also get a train leaving petterborough and arriving by 11:15 Sentence4: That's all I need, Thank You. Sentence5: Sure, can you try to get a table for 8 people at 17:00 on Tuesday? Sentence6: Okay... how about British food? Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : IAUXALYD . Sentence8: I just need to make sure I arrive in cambridge by 11:15 please. Sentence9: I would like to try Jamaican food. Sentence10: Unfortunately I can't find any Jamaican restaurants. Is there another type of food you'd like to try? Sentence11: Absolutely. How many tickets would you like to be booked? Sentence12: There are 21 different restaurants in that area matching your price range. What kind of food are you in the mood for? Sentence13: I'm looking for a moderately priced restaurant in the center of town. Sentence14: Sure thing! The reference number is S4FM08GE . See you! Sentence15: There is a train that leaves at 10:19 and arrives at 11:09. Would you like to book it? Sentence16: there are eleven trains that match that criteria. What time would you like your departure time to be? Sentence17: Yes, Tuesday, the same day as the restaurant booking, can I please get a departure time as well? Sentence18: Before going further I would just like to confirm you'd be leaving on Tuesday, is that correct? Question: Who has spoken the sentence 16? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: That's all I need for now. thank you very much. Sentence2: Addenbrookes Hospital. The contact number for the paediatric intensive care unit is 01223217715. Sentence3: Can I get the postcode as well? Sentence4: Where's the closest hospital with a paediatric intensive care unit? Sentence5: You are welcome! Have a great day! Sentence6: It looks like the Post Code is CB20QQ. Question: Who has spoken the sentence 5? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: The first train leaves at 5:59. Sentence2: Will you book it for me? Sentence3: Will this be for Monday also? Sentence4: I would be happy to book for you, how many tickets will you need? Sentence5: There are 49 train options and the price is 16.60 pounds. Sentence6: I am looking for the missing sock. Sentence7: Ok, all set. The table will be reserved for 15 minutes and your reference number is UT72J030 . Is there anything else I can help you with? Sentence8: Hello! Can you help me find a particular restaurant? Sentence9: The Missing Sock is located at Finders Corner Newmarket Road in the east. Phone is 01223812660. Sentence10: I sure can. If you bump your time back an hour there is a discount. Would you be interested in that? Sentence11: No thank you. Can you try to keep it at 17:45 unless its unavailable. And can I get a reference number please. Sentence12: TR3602 arrives at london liverpool street by 17:27, if that is cutting it too close the next closest is TR1764 arriving by 15:27. Sentence13: Sure, is there a particular cuisine you're looking for? Sentence14: Thanks, I also need a train departing from Cambridge and going to London Liverpool Street and need to arrive by 17:30. Sentence15: As long as it arrives by 17:30 and meets the other criteria you can choose. Sentence16: That might be a little early. Can you find something that arrives clsoer to 17:30? Sentence17: Can you book The Missing Sock for 5 people on Monday at 17:45? Sentence18: I hope you enjoy your stay. Sentence19: just one ticket. Sentence20: Yes, Monday and please provide the price. Sentence21: No, that will be all for me. Thank you and have a nice day!! Sentence22: You are set, the total fee is 16.6 GBP payable at the station . Reference number is : 7FGNO098 ., any other questions? Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:

Answer: (A) User