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

Ex Input:
Sentence1: kohinoor. i want to book a table for 2 people at 16:45 on Thursday Sentence2: Nope, I'm all finished for today. Thanks so much, goodbye now! Sentence3: Sure. Booking was successful. The table will be reserved for 15 minutes. Reference number is : X9AVZ8EI . Can I help with anything else today? Sentence4: Absolutely. What is the name of the restaraunt you are interested in? Sentence5: You are very welcome, bye! Sentence6: I need to find some information in a particular restaurant. Are you able to look up a specific place? Sentence7: I also need a Thursday train. Sentence8: Depart from Ely and would like to arrive by 13:00 in Cambridge. I need to book it for 2 people I also need a reference number. Thanks Sentence9: What location will you depart from and where are you headed? Sentence10: Sure thing, it's booked and your reference number is PWSVK4XQ . Do you need more help? Question: Who has spoken the sentence 6? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: You are booked for a black skoda. Is there anything else? Sentence2: Thank you for your help Sentence3: Could you give me the contact number for the skoda, please. Sentence4: I'd be happy to book that for you, where are you departing from? Sentence5: No, that is it. Goodbye. Sentence6: Booked car type : black skoda Contact number : 07129813049 Sentence7: I would like a taxi to limehouse. I need to arrive by 7:15. Sentence8: You're very welcome. Do you need any further assistance? Sentence9: Thanks for using our services. Sentence10: I am leaving from nusha. Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User

Ex Input:
Sentence1: It doesn't matter. What do you recommend? Sentence2: We have many options! Did you have a specific price range? Sentence3: Have a wonderful day, and enjoy your meal! Sentence4: I would recommend one of the locally owned restaurants. What is your address? I can find one of the closest to you. Do you want to walk? Sentence5: Thanks, that's all I needed today. You've been a great help! Sentence6: Please just book a cheap Italian one for me in the centre, I need it for 8 people at 13:45 on Saturday. Sentence7: Definitely cheap. Sentence8: There are several, two on Regent Street, and one at 12 Bridge Street. Do you have any preferences? Sentence9: Hi. I'm looking for an Italian restaurant in the centre of the city? Sentence10: I was able to book a table at zizzi cambridge for 13:45. Your reference number is KSYHRB8I . Question: Who has spoken the sentence 1? (A) User (B) System

Ex Output:
Answer: (B) System