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

Ex Input:
Sentence1: You're welcome. Is there anything else I can help you with? Sentence2: I am looking for a 3 star hotel to stay in. Sentence3: Thank you. What's the travel time? Sentence4: No, that is all I need. Thanks! Sentence5: I reserved Wednesday night at the University Arms Hotel for 5 people. Your reference number is GM90EY8A . Is there anything else? Sentence6: travel time is 47 minutes Sentence7: Lets try just booking it for one night. Sentence8: The hotel should be in the expensive price range. Sentence9: Okay, I've got two that fit the bill. One in the centre of town and one in the south. Do you have a preference? Sentence10: I am very sorry, but I was unable to book a reservation for you. Would you be willing to book a later day or would you be willing to have a shorter stay? Sentence11: I do, yes. I would like to stay in the center of town. I need it to fit five people, for 3 nights, starting Wednesday afternoon. Sentence12: Great! I will need 5 tickets. Sentence13: same day as my hotel booking. Sentence14: You are booked for Train Tr5556, your reference number is JA6WAOJC . Sentence15: I do have a four star hotel in the centre of town, but it is also unable to accommodate your guests for 3 days. Can you adjust your length of stay? Sentence16: Sure I will be able to book you a train, on what particular day will you want to travel? Sentence17: Can we book the other expensive 3 star hotel for one night starting on wednesday? Sentence18: I apologize. One night is not working either. There are guesthouses. Sentence19: How many tickets do you need? Sentence20: There are 6, 3 start hotels in Cambridge. Do you have a preference for the part of town it is located in? Sentence21: No trouble at all, I hope you have a wonderful stay! Sentence22: What about the 4 star hotels? Sentence23: Yes, I also need a train leaving after 18:30 from kings lynn to cambridge. Sentence24: Thank you very much. Question: Who has spoken the sentence 4? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: You're welcome and enjoy your stay. Sentence2: Can you help me find a hotel in the North part of Cambridge? Sentence3: I have two moderately priced hotels in the north for you. The Ashley Hotel and the Lovell Lodge. Would you like me to book one? Sentence4: Great I can take care of that. How many people? How long will you be there and when will your stay start? Sentence5: Booking was successful. The table will be reserved for 15 minutes. Reference number is : E4J0YE8W . Anything else. Sentence6: thanks very much to you! I am done now. Farewell! Sentence7: I would like to book the Ashley Hotel. Sentence8: Okay, be on the lookout for a grey honda. The contact # is 07374179224 Sentence9: There will be 7 of us arriving Sunday. We will be staying 3 nights. Sentence10: They do both have internet. Sentence11: Yes I am needing a restaurant that is the same price range as my hotel and in the same area. Sentence12: There are two; The Golden Wok which is a Chinese place, and The Nirala, with Indian cuisine. Which would you prefer? Sentence13: Does it have internet? Sentence14: I will go with The Nirala since I love Indian food. Please book it for 11:00 for the 7 of us on Sunday. Sentence15: I was able to book the room for you the reference number is HQKA3TBW . Can I help you with anything else? Sentence16: Yes, I want a taxi too. I'll need contact number and car type. It should pick me up at the hotel and arrive at restaurant by 11:00 Question: Who has spoken the sentence 11? (A) User (B) System

Ex Output:
Answer: (B) System


Ex Input:
Sentence1: Sure, I can help you with that. Where would you like to travel to? Sentence2: It is in the moderate price range at 52 gilbert road Sentence3: Going to Cambridge. Sentence4: Yes please. Could you also provide me the reference number? Sentence5: There will be 2 people. Sentence6: I am looking for information in Cambridge Sentence7: I'm looking for a hotel called, Archway House. Sentence8: And for haw many people ? Sentence9: I will also need a train for Saturday, leaving after 13:45. Sentence10: I will be departing from London Kings Cross. Sentence11: Where will you be departing from? Sentence12: Booking was successful, the total fee is 37.76 GBP payable at the station . Reference number is : 6BM4QJXX . Sentence13: Alright. I'd like a room on saturday for 4 nights. 2 people will be staying. Sentence14: Booking was successful.Reference number is : S9V74O1G . can i be of any help again? Sentence15: Iwillgetthatreferencenumber for you. Sentence16: You're so welcome! Feel free to come back if you think of anything else you need! Bye! Sentence17: I have train TR4101 that leaves at 15:17 and arrives at 18:08. Would you like me to book it for you? Sentence18: Great thank you! That's all I needed! Bye! Sentence19: What type of information do you need help with? Sentence20: Ok, thank you. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:

Answer: (A) User