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

Ex Input:
Sentence1: I can definitely help you out with that. Is there a certain area of town you'd like to stay in? Sentence2: I have booked your stay at the Alexander Bed and Breakfast for Friday for 3 days for 6 people. Your reference number is DJF36WMD . Is there anything else I can help you with today. Sentence3: The train ID is TR9629, leaving at 18:09 and arriving by 19:54. Can you tell me how many tickets you would like to purchase? Sentence4: I'd like one ticket please. Sentence5: I will need to take a train from Leicester on the same day as my hotel booking. Sentence6: I am looking for a cheap hotel with free parking. Sentence7: All trips from leicester cost 37.8 pounds and take 105 minutes. Is there a specific time you would like to depart or arrive by? Sentence8: Alexander bed and breakfast is a guesthouse in town centre in the cheap price range. It has both free parking and wifi. Would you like to book a room? Sentence9: We will be arriving on Friday and staying 3 nights. Sentence10: I will need to know how many nights and what day you will be starting your stay before we finish the booking. Sentence11: I do not. I just need the train ID and what arrival time it has. Sentence12: Alright I've booked you one ticket, the total will be 37.79 and your reference number is PGY0G1J2 . How else can I help you? Sentence13: Sure, you need a taxi to Alexander Bed and Breakfast from where, and do you have an arrival time request? Sentence14: Can you please schedule a taxi to take me from the station to my hotel? Sentence15: Thank you for your help. Sentence16: I need to leave after 17:45 heading for Cambridge. Go ahead and book the closest time and give me the train ID and arrival time. Sentence17: The train arrives by 19:54 and TR9629 is the train id. Sentence18: Is there anything else I can help you with? Possibly entertainment or places to visit on your trip? Sentence19: I would prefer to be in the centre of town, and I need the hotel to include free parking. Sentence20: Yes, please. That sounds perfect. There will be six of us. Question: Who has spoken the sentence 12? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: How about the Hundington Marriott Hotel in the west? It gets 4 stars. Sentence2: Is that a 1 star hotel? Sentence3: I do not have a preference on the area. Sentence4: Can you look for a 4 star hotel in the same price range? Sentence5: No thank you that will be all Sentence6: Okay, in what area? Sentence7: Yes, it is called Nusha. Sentence8: Well, if you are sure, I hope you have a great visit! Thank you. Sentence9: Maybe I could help. Do you know the name of it? Sentence10: I would recommend the university arms hotel, which is centrally-located and offers free wifi and parking. Does that interest you? Sentence11: I've located Nusha and it's in the South. It's located in Cambridge Leisure Park on Clifton Road. Sentence12: Ok, thank you. I also need to find a hotel that is expensive. Sentence13: I have an attraction in mind that I need help finding. Sentence14: No. I'm sorry. It's not a 1 star establishment. Is there anything else I can help you with today? Question: Who has spoken the sentence 9? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Can I have the departure time and price of train TR7329? Sentence2: How about a Spanish one? Sentence3: I am coming for birmingham new street, would like to arrive on wednesday at 10:45. Sentence4: Thank you, that's all I need. Sentence5: Okay. Your booking was successful. Your reference number is VJ7PEVYV . The table will be reserved for 15 minutes. Sentence6: I have two- la tasca, which is moderate, and la raza, which is cheap. Sentence7: I can put you on the TR7329, it will get you there by 10:23, how many tickets? Sentence8: Awesome. We're here if you need anything else. Thank you for using the Cambridge TownInfo centre. Have a great day. Sentence9: There are trains arriving in Cambridge daily! Where are you coming from, on what day, and at what time? Sentence10: pick one for me and book a table for 8 people at 18:30 on wednesday. Sentence11: Could you also tell me if there are any trains available arriving in cambridge that day? Sentence12: TR7329 Leaves at 07:40 and costs 75.10 pounds Sentence13: Iam sorry but I have nothing matching your needs right now. Sentence14: Yes, I was hoping for modern global food. Sentence15: We have many restaurants in the center of town. Do you have a certain cuisine or price range in mind? Sentence16: I'd like to find somewhere to eat in the centre. Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:

Answer: (A) User