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

Sentence1: Sure, i can help you with that. Where will you be departing from? Sentence2: Okay, and what is your destination? Sentence3: I want to leave from the train station. Sentence4: i want to book a taxi. Sentence5: Can you tell me what time you would like to leave? Sentence6: Got it, your booking has been completed! Look out for a blue tesla, contact number 07520411520. May I assist with anything else? Sentence7: I want to leave london kings cross train station after 02:00 Sentence8: I have booked you a white ford. The contact number is 07064257037 Sentence9: Oh, I'm sorry I need to get to gallery at twelve a high street. Sentence10: It's called gallery at twelve a high street. Sentence11: I'm sorry, I don't understand. What is the gallery name you want to travel too? Sentence12: Reservation reserved, let me know if you need any more assistance with anything else. Sentence13: Perfect!! Thank you for all your help. Sentence14: That will be all. Thank you. Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System

Sentence1: Booking was successful. Your reference number is : 1F0GOZ1D . Sentence2: Can you try 4 nights instead? Sentence3: I recommen a and b guest house. Should I book that? Sentence4: We have 6 total guesthouses in the east, any more preferences? Sentence5: Not particularly. Do you have one you would recommend? Sentence6: Yes, I would like free wifi and a 4 star rating. Sentence7: I'm looking for a guesthouse in the east please. Sentence8: funky fun house would be nice for you Sentence9: Great, could I also find someplace near the hotel to go for fun? Sentence10: Unfortunately there are no rooms available for Wednesday in the East. Could I look at a different location or day? Sentence11: please, For 2 people for 5 nights starting on Wednesday Sentence12: I have six places, is there a price range you have in mind? Question: Who has spoken the sentence 6? (A) User (B) System
Answer: (A) User

Sentence1: The TR3544 leaves at 19:50 and arrives at 20:07. Would you like to book it? Sentence2: I am leaving from cambridge and going to ely and I need to leave after 19:30. Sentence3: Where are you going to and what time would you like to leave? Sentence4: Ah, yes. The Acorn Guest House is moderately priced and located in the north. It has a 4 star rating and offers both free internet and parking. Sentence5: I am looking for the acorn guest house. Sentence6: How many people do you want to purchase tickets for? Sentence7: Thank you. Can you also find a train that leaves on sunday and departs from cambridge. Sentence8: its phone number is 01223353888 Sentence9: yes book it for me please Sentence10: Sounds perfect. What is the phone number? Question: Who has spoken the sentence 8? (A) User (B) System

Answer: (A) User