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

[EX Q]: Sentence1: Help me find a moderate priced british food place please. Sentence2: Your reference number is T790DS3O and the total fee is 35.2 GBP, which is payable at the station. Sentence3: We will have to start over now. Sentence4: Not at this time. Could I just get the phone number? Sentence5: Yes please book it for 8 people Sentence6: Yes, restaurant one seven is located in the centre. Sentence7: Perfect, could you just tell me their phone number? Sentence8: you are welcome any time Sentence9: I also need a train from Ely to Cambridge on Tuesday to arrive by 12:30. Sentence10: I will work on booking this and be right back with you. Sentence11: No, that should be all. thank you very much. Sentence12: Is that restaurant in the Centre? Sentence13: TR3412 leaves at 11:35 and arrives at 11:52. Will this one work for you? Sentence14: Yes, sorry. Tuesday, leaving Ely and getting to Cambridge by 11:30. Sentence15: Okay, well I suppose this is goodbye then. Sentence16: The phone number is 01223337766 Sentence17: Actually, I need to change my reservation. I need the train to arrive by 11:30 instead. Sentence18: Thank you for using the Cambridge TownInfo centre. Goodbye Sentence19: I need it for 8, as I said. Do you have the reference number? Sentence20: Your updated train is now TR4669. Your new reference number is 2T4NNGG9 . The total fee remains the same. The train departs at 09:35 and arrives at 09:52. Anything else? Sentence21: Their phone number is 01223337766. Do you need assistance with anything else? Sentence22: restaurant one seven is a nice place. Do you want to book? Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: There is a restaurant called Thanh Binh. Would you like me to book a table? Sentence2: Yes i would like a table for 7 people on monday at 13:15 Sentence3: We would prefer vietnamese please. In the west area? Sentence4: How many tickets would you like me to book? Sentence5: The travel time is 49 minutes. Would you like to know any more info? Sentence6: Thank you, what is the arrival time? Sentence7: Your reservation has been set for Monday at 12:15 for 7 people. The reference number is 3MTLQCBA . Can I do anything else for you? Sentence8: I am leaving from Cambridge and headed to Stevenage. I would like to leave after 17:30 please. Sentence9: Just one ticket, please. Sentence10: Certainly. The train will arrive at 20:10. Can I help you with anything else? Sentence11: Can you tell me when that train will be arriving in stevenage? Sentence12: Alright, TR6692 looks like your best bet. Would you like me to book you passage? Sentence13: Thank you I also need a train on tuesday leaving after 17:30 Sentence14: I think that about does it. Thanks for the help today. Sentence15: I need to find a cheap place to eat. Sentence16: Booking was unsuccessful do you have any other preference? Sentence17: Can you try 12:15 on Monday? Sentence18: I've booked that ticket for you. The reference number is FTLHURXQ, and the total fee is 12.8 GBP. Sentence19: It was my pleasure to assist you. Thanks for using our service. Have a wonderful day. Goodbye. Sentence20: Yes. Please book that for me. Thanks so much! Sentence21: I can find that for you. What cuisine are you interested in? Sentence22: I would be happy to help with that. Can you tell me the departure city and where you are going? Question: Who has spoken the sentence 11? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: No, and it also does not need free parking. Sentence2: Thank you. I am also looking for a nice expensive hotel. It does not need internet. Can you help with that? Sentence3: Yes, I would also like a taxi to take me between the Marriot and the museum. Sentence4: Thank you for all your help. I am all set now. Sentence5: Could you please give me the postcode, address and entrance free of a museum? Sentence6: Okay, I will need to book for 8 people for 4 nights starting from Sunday. Sentence7: You are all set for 11:15, the car will be a white audi and they can be reached at 07467849660 Sentence8: I will stay in the west area of town. Sentence9: Byard Art is a museum that has free admission. The address is 14 King's Parade and the postcode is cb21sj. Sentence10: Your booking has been completed! Here is your reference number VJUBQ1YN . Can I assist you with anything else? Sentence11: Ok, it was a pleasure assisting you. Have a wonderful day. Goodbye. Sentence12: Ok, I will contact the Mariott and get you all set up. Sentence13: There is a cinema, museum, park, theatre and nightclub. Would you like information for any of these? Sentence14: There are a total of 5 different places to stay that are expensive. Is there a certain area of town you would like to stay in? Sentence15: Oh, sorry! I would like to leave the museum by 11:15. Sentence16: Hi. I'm looking for something to do. Are there any entertainment attractions in the South part of town? Sentence17: Huntingdon Marriott Hotel and University Arms Hotel are both 4-star rated hotels. Would you prefer the West or the Center area of town? Sentence18: I will need a departure time or an arrival time between the two locations. Question: Who has spoken the sentence 5? (A) User (B) System
[EX A]:
Answer: (B) System