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

Sentence1: 07426688661 is the contact number, I have you in a grey Toyota. Sentence2: Great. Can you tell me where you will be traveling to and from? Sentence3: I need to get there by 11:45. Sentence4: That's perfect, thanks! Sentence5: I need to book a taxi please. Sentence6: You are welcome. Thank you for calling us. Goodbye. Sentence7: Can I help you with anything else? Sentence8: No, that's everything. Goodbye. Sentence9: I want to go from wandlebury country park to huntingdon marriott hotel Sentence10: Okay, I will need some more information from you. What time would you like to leave? Question: Who has spoken the sentence 8? (A) User (B) System
Answer: (A) User

Sentence1: Okay, the TR8944 leaves at 15:39 and arrives by 17:07. Would you like me to book tickets for you? Sentence2: There are 10 trains leaving fro Liverpool Street on Thursday. Did you have a departure time in mind? Sentence3: Okay I have booked you and your reference number is WLUOQKEV . Sentence4: rosa's bed and breakfast is in the cheap price range Sentence5: I'm looking for a train departing from london liverpool street leaving on thursday. Sentence6: Do you need a taxi? Sentence7: Goodbye, and thanks again. Sentence8: Yes, I don't want to leave for Cambridge until 15:00 at the earliest. Sentence9: Sure thing. Thanks for letting us help you today! Sentence10: Thank you. I also need a hotel in the south. Sentence11: then thanks for inquiring with us. Sentence12: I don't need a taxi, thanks for asking Sentence13: No price range but I do want a 4 start. Sentence14: Yes, for 6 people. Sentence15: What price range are you interested in? Sentence16: That sounds great. I'll need a reservation for 6 people for 4 nights on Thursday. Sentence17: I've gone ahead and booked that for you. Your Reference number is : EUZ34KY9 . Is there anything else I can assist you with today? Sentence18: No, that takes care of everything I need. Thanks! Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System

Sentence1: I'm looking for a moderately priced restaurant to eat at in the north. Sentence2: Then booking was unsuccessful. Would you like me to try the Indian restaurant? Sentence3: I would like a table for 8 people at 17:30 on Wednesday Sentence4: If you tell me a day and a time you would like to reserve, I can book that for you. Sentence5: No problem. I hope you have a great day. Good-Bye! Sentence6: Thank you so much for your help. Sentence7: It's booked, your reference number is 5YBVERXA . Sentence8: Chinese would be great! Sentence9: Okay, that sounds good. I'll need a reference number. Sentence10: I've found a Chinese restaurant and an Indian restaurant. Which one do you prefer? Question: Who has spoken the sentence 9? (A) User (B) System

Answer: (B) System