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: Hi. Can you please help me find a restaurant that serves food from singapore ? I'd like it to be on the East side of town if possible. Sentence2: Thank you for using the Cambridge restaurant system. Goodbye. Sentence3: Yu Garden is located on the east part of town. Would you like the telephone and address? Sentence4: What is the address, phone number, and postcode? Sentence5: Can you help me find some Chinese food then? Sentence6: There are no restaurants serving Singaporean food on the east part of town. Sentence7: Thank you, goodbye. Sentence8: Yu Garden is located at 529 Newmarket Road Fen Ditton, C.B 5, 8 P.A, and the number is 01223 248882. Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: That is perfect. Thank you that's all I needed today. Sentence2: Thanks so much. Could I bother you to help me find an expensive Chinese restaurant? Sentence3: I need the price for the train that leaves at 10:40 for one and the arrival time. Sentence4: The price is 75.10 per ticket and arrives at 13:23 Sentence5: I have a trip on wednesday and I need a train that departs from birmingham new street. Sentence6: TR7940 leaves at 10:40. Would you like me to book some seats for you? Sentence7: The train should depart from birmingham new street and should leave on wednesday. The train should leave after 10:15 and should go to cambridge Sentence8: Yes, please book two seats for me at 10:40. What time will it arrive in Cambridge? Sentence9: We have several. What part of town would you like it in? Sentence10: No preference. But please make sure I get the address. Sentence11: You will arrive by 13:23. I have 2 seats booked for you, and the reference number is RBQLUN8O . Is there anything else I can help you with? Sentence12: there are many that day. can you specify your destination? Sentence13: You're welcome. Have a great day! Sentence14: i recommend a place called Hakka. they are located on milton road chesterton. Question: Who has spoken the sentence 11? (A) User (B) System

Answer: (B) System