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

[EX Q]: Sentence1: Yes. I will be staying 5 nights starting Friday. Sentence2: Im also looking for the cow pizza kitchen and bar. Whats the address for it? Sentence3: its address is Corn Exchange Street. what else can i do for you? Sentence4: Oh, expensive please. I do hope it is a guesthouse? Sentence5: You have helped me with everything I need. Thank you. Sentence6: Anytime. Enjoy your visit. Sentence7: I'll be staying for 5 nights. Sentence8: Unfortunately they are both hotels. Sentence9: Booking was successful. Reference number is : GQPN80PK . Is there anything else I can assist you with today? Sentence10: Okay I've got three options here. Would you like a cheap or an expensive price range? Sentence11: Can you help me locate a hotel to stay at that has free parking and a 4 star rating? Sentence12: Oh. I would really prefer a guesthouse. How about the moderate price range? Sentence13: Okay, I recommend The Acorn Guesthouse. Would you like me to book there? Sentence14: NO problem. How long are you staying? Sentence15: The location isn't important. I need to book it for Friday, please. Sentence16: They are moderate, it is a gastropub, in case you need them, the postal is cb23qf and the phone number is 01223308871, can I assist with anything else? Sentence17: I have 9 guesthouses in the moderate price range, do you have a location preference? Sentence18: I need it's price range please Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: 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
[EX A]: Answer: (A) User

[EX Q]: Sentence1: I am looking for a hotel called huntingdon marriott hotel. Sentence2: Yes, please book it for 5 people. Sentence3: Booked it, your ref. # is IOEJEYMY Sentence4: Thank you! Sentence5: Thank you. Can you book it for 5 people and 4 nights starting on Thursday? Sentence6: The TR9487 will reach Petersborough at 8:24 on Friday. Would you like to book that train? Sentence7: What day will you need the train and where are you traveling to and how many people will be traveling? Sentence8: I'm also looking for a train departing Cambridge and arriving at 8:30. Can you help out? Sentence9: We would like to go to peterborough on Friday. Sentence10: Booking was successful.Reference number is : QBQ6UVZ5 .what else can i do for you? Sentence11: Thank you for all your help. Have a great day. Sentence12: It is located at kingfisher way, hinchinbrook business park, huntingdon Question: Who has spoken the sentence 7? (A) User (B) System
[EX A]:
Answer: (B) System