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 need a train for Tuesday after 12:30 Sentence2: Can I get the address to the funky house? Sentence3: Where would you like to go Sentence4: Yes, please. I'll need it booked for 5 people. Can I please have the reference number? Sentence5: TR2771 leaves at 13:29. Would you like me to book a reservation for you? Sentence6: The only multiple sports is located in the east. Can I get you information for that place? Sentence7: Booking was successful, the total fee is 50.5 GBP payable at the station .Reference number is : 38589BRC . what else can i do for you? Sentence8: They are at 8 mercers row, mercers row industrial estate, postal cb58hy, no info on entrance fee but they can be reached at 01223304705 to answer that. Sentence9: I'm looking for a place to go in the south. I'd like it to be of the type multiple sports. Sentence10: Yes, since there is no multiple sports location can you pleas find me something in the east. Sentence11: funky fun house and also cherry hinton hall and grounds are both in the east. Sentence12: I need to go from Cambridge to Bishops Stortford. Sentence13: Thank you for using our system today! Sentence14: Anything that would be entertainment. Sentence15: There are ten places in the east to pick form, any specific interest in a type of place? Sentence16: Great that's all I needed to know today, thank you. Question: Who has spoken the sentence 6? (A) User (B) System
Example Output: Answer: (A) User

Example 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
Example Output: Answer: (A) User

Example Input: Sentence1: Sure. Can you give me the names and addresses of the other 3 as well? Sentence2: Train TR7900 leaves cambridge for birmingham new street monday at 16:01. Your reference number is OCF8O3GJ . Sentence3: I am looking for a train. The train should leave on monday and should go to birmingham new street Sentence4: There are several trains available. Are you able to provide a specific time? Sentence5: Can you help me find a theatre in the centre of town? Sentence6: Have a great day! Sentence7: cambridge arts theatre is at 6 saint edward's passage, mumford theatre is at anglia ruskin enterprise, east road; and the cambridge corn exchange is at wheeler street. Sentence8: What is your departure time and location? Sentence9: Ok, great. That's all I needed. Thank you for all of your help! Sentence10: No, the first train after 15:15 will work. I need to book the trip for 8 people, and please include my reference number. Sentence11: Sure, there is cambridge arts theatre, it is located at 6 saint edward's passage. There are 3 others if you would like information on them as well. Sentence12: Leaving Cambridge going to Birmingham New Street on Monday any time after 15:15. Question: Who has spoken the sentence 4? (A) User (B) System
Example Output:
Answer: (A) User