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

Ex Input:
Sentence1: The address for Little Seoul is 108 Regent Street, City Centre. Is there anything else I can help you with? Sentence2: Yes, I would like both the phone number and the postcode please. Sentence3: I'm looking for an expensive restaurant in the centre if you could help me. Sentence4: I got that backwards. Need a train leaving Kings Lynn after 9:15 and arriving in Cambridge sometime on Saturday. Sentence5: There is a Korean restaurant called Little Seoul located at 108 Regent Street City Centre. Would you like their phone number? Sentence6: TR2514 leaves at 10:11 and arrives at 10:58. Will this one work for you? Sentence7: Sure. Could you tell me the exact travel time? Sentence8: Sure. The travel time for TR2514 is 47 minutes. Anything else I can help you with today? Sentence9: I sure can. There are lots of choices. Are you looking for a particular type of food? Sentence10: Have a wonderful day yourself. Goodbye. Sentence11: Can I also have the address please? Sentence12: that is it for today. good day thank you Sentence13: I also want to see the travel times for a train going from Kings Lynn from Cambridge on Saturday. It should leave after 09:15. Sentence14: Is there a time you would like to arrive by? Sentence15: The phone number for little seoul is 01223308681, postcode cb21dp. Can I help you with anything else today? Sentence16: No, not really. I think I'd like to try something different. Could you suggest something? Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System


Ex 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

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: Sorry, they don't have those dates available. Would you like me to try for other days or another location? Sentence2: Glad I could help. Have a nice stay. Bye. Sentence3: Sorry, the Acorn is not open then, shall I try somewhere else that fits your criteria? Sentence4: The Acorn Guest House is a 4-star guesthouse in the North. It has free parking and wifi, and is in the moderate price range. Would you like a room? Sentence5: That sounds like what I am looking for. Yes, I'd like to book a room. Sentence6: Good news, The Acorn just opened up for one night. Your reference number is UKMNFD3Q . Can I help you with anything else today? Sentence7: Hi, can you help me find a place to stay? I'd like a hotel on the north side, please. Sentence8: I would like to book a room for 3 days starting Tuesday. There is a total of 3 people. Sentence9: Great! When would you like to stay? Sentence10: Yes, whatever you can find. Sentence11: Thanks, I think that's all I need right now. Bye Sentence12: Can you try for just 1 night then? Question: Who has spoken the sentence 8? (A) User (B) System

Ex Output:

Answer: (A) User