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

Sentence1: Sure, it's at granta place, Mill lane. Sentence2: Sure it's a moderately priced 4 star guesthouse in the east. Would you like me to book it? Sentence3: From all of us at Cambridge, we hope you enjoy your stay! Farewell! Sentence4: Thank you so much for all of your help today. I am all set. Bye. Sentence5: Could you tell me their address as well please? Sentence6: Thanks! I'm also looking for information on the A & B Guesthouse. What can you tell me about that place? Sentence7: Yes, the post code for the A and B Guest House is cb12dp. Is there anything else I can do for you? Sentence8: What is the phone number for scudamores punting co? Sentence9: Okay, which would you like to leave from? Sentence10: The phone number for Scudamores Punting Co is 01223359750. Is there anything else I can help you with today? Sentence11: Your taxi is booked. The car is a yellow honda and the contact number is 07826111038 Sentence12: May I have the postcode? Sentence13: I would like to leave the hotel by 7:00. Also, can you give me the contact number and car type once you have booked it? Sentence14: I also need a taxi to go between the two places. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Not right now, but could I please get the address for the hotel? Sentence2: Certainly. All Saints Church is in postcode cb58bs. Can I help you with something else today? Sentence3: The Cambridge Belfry is located at back lane, cambourne. The phone number is 01954714600 and postcode cb236bw. Is the anything else I can help with? Sentence4: Thank you. Have a nice day as well. Good bye. Sentence5: Yes please, we'll be needing somewhere to stay the night. What can you tell me about the Cambridge Belfry? I've heard it's pretty nice, is that true? Sentence6: It is four stars. What else would you like to know? Sentence7: Hello i'm looking for places to go in cambridge please. Sentence8: No that's it, thank you. Sentence9: Does it have free parking? Sentence10: The Cineworld Cinema is located south at Cambridge leisure park, clifton way. Is there a specific activity you had in mind? Sentence11: I hope you enjoy your stay. Have a nice day. Sentence12: The Cambridge Belfry does have free parking. Would you like me to book it for you? Sentence13: I need a place in the centre. Sentence14: All Saints Church is in the centre area. The entrance fee is free. Would you like to book that? Sentence15: Yes, can I get the postcode. Sentence16: Have a nice day! Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: Enjoy your stay in Cambridge! Sentence2: Okay well I was able to book you at The Worth House and your reference number is 86XVFEUY . Sentence3: Can you please tell me how many people will be staying and for how many nights? Sentence4: Hello, I'm looking for a guesthouse on the westside to stay. Sentence5: Yes, in the same price range please. Sentence6: Please book it for Friday,thank you. Sentence7: You are welcome. Also for your reference the Worth House does have free parking. May I help you with anything else? Sentence8: The amount of stars do not matter as long as it is in the same price range Does Worth House in the North include free parking? Sentence9: I have found one that is cheap with 4 stars, and one that is moderately priced with 3 stars? Do either of those sound appealing to you? Sentence10: Worth House in the North is 4 stars and cheap. Would you like to try it? Sentence11: Yes, 3 people for 5 nights starting on monday. Sentence12: Booking was unsuccessful. Want to try another hotel? Sentence13: Great! That's Finches Bed and Breakfast. It's located at 144 Thornton Road cb30nd. Would you like to book a stay? Sentence14: No thanks. Thanks again for your help. Sentence15: I am sorry I have no guest houses in the west. Can I look one up in another area for you? Sentence16: Are there any other places like that that also have free parking in that area? Sentence17: The cheap one with the better rating sounds appealing. Sentence18: Thanks, that's all I need. Have a nice day. Question: Who has spoken the sentence 4? (A) User (B) System

Answer: (A) User