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

Ex Input:
Sentence1: Great. You should expect a blue volkswagen . You can contact them on 07261965496 Sentence2: Where will you be headed? Sentence3: Thank you! That's all I need for now. Sentence4: Great, I hope you have a great visit! Sentence5: I'll be headed to the Cherry Hinton, of course. Sentence6: THanks so much you have been a huge help. Sentence7: Can you help me find a moderately priced restaurant in the center of town? Sentence8: How about asian oriental that is in the moderate price range located in the centre of town? Sentence9: cool I would need the address, postcode, and phone number. Sentence10: There is no information on the entrance fee since there are a variety of facilities. Anything else I can help with? Sentence11: How about the cherry hinton village centre? Sentence12: Sure, I can help with that. Is there a certain cuisine you are looking for? Sentence13: That sounds perfect! Do you know the entrance fee? Sentence14: Have a nice day. Good bye. Sentence15: Okay, great. I'm also looking for an attraction in the same area. I'd like it to be multiple sports. Sentence16: No preference really. whatever you recommend Sentence17: Okay, the yippee noodle bar is at 40428 King Street City Centre postal code cb11lh and it's number is 01223518111. Is there anything else I can help you with? Sentence18: I need to book a taxi to commute between the 2 places. I want to leave the restaurant by 14:30. Question: Who has spoken the sentence 15? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: I am also looking for a place to stay at a 4 star hotel near the restaurant. Sentence2: I was able to book a room for 5 people, 5 nights. Your reference # is 5DD52JOS . Can I help you with anything else today? Sentence3: I prefer something cheap. Sentence4: Yes, for 5 nights on the same day. I also need the reference number. Thanks! Sentence5: Lets go with charlie chan, I would like to to book a table for 5 people at 11:00 on wednesday. Sentence6: Okay, have a great day! Sentence7: Need a place to dine, chinese near centre. Sentence8: The Alexander Bed and Breakfast is cheap, would you like to book it? Sentence9: There are three options, charlie chan, rice house and golden house. Can I book you for one of those? Sentence10: Are either option cheap? Sentence11: There are two located in the same area. alexander bed and breakfast and university arms hotel? Sentence12: I think that is all I need today. Thank you for all your help. Sentence13: I have 10 places. Would you like a certain price range? Sentence14: Your booking was successful, the reference number is B1FIKA09 . Question: Who has spoken the sentence 3? (A) User (B) System

Ex Output:
Answer: (B) System

Ex Input:
Sentence1: Not yet. Can I get the postcode for Gonville Hotel? Sentence2: I'm looking for a place that offers free parking to it's guests. Got any hotels that offer that? Sentence3: I would like it in the centre, moderate range in price. Sentence4: Do you have a price range in mind or type? Sentence5: Almost every hotel and guesthouse in Cambridge has free parking! What area and/or price range are you looking for? Sentence6: Do they have free wifi? Sentence7: how about the yippee noodle bar? Sentence8: I also need a restaurant near the hotel. Sentence9: That would be fine. Please make reservations for 1 on monday at 15:30. Sentence10: I will do that for you now. Sentence11: Yes actually they both do. Would yu like to book one of them? Sentence12: Sure! The post code for the gonville hotel is cb11ly. Let me know if there is anything else I can do for you. Sentence13: I want to be in the centre. Sentence14: Your welcome. I am glad I could be of help. Sentence15: Thank you for helping me. Sentence16: Here are the two choices of hotels in the Centre area that meet your criteria: Gonville Hotel and University Arms Hotel. Do either of these interest you? Question: Who has spoken the sentence 14? (A) User (B) System

Ex Output:
Answer: (A) User