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

[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: I have 2 guest house.One is in the moderate price range and the other is cheap. Would you like to book one of these? Sentence2: There are no expensive hotels with 4 stars in the south with free parking? I'll take cheap if there aren't, but I need the address and phone number, please. Sentence3: I am looking for a hotel with a 4 star rating and price no more then 125 a night. Sentence4: Can you give me the phone number for Primavera? Sentence5: Primavera is in the centre at 10 King s parade. Admission is free. Can I get you a train or taxi as well? Sentence6: That sounds fine. Can you provide the phone number and address? And, is that considered a hotel or a guesthouse? Sentence7: Certainly! Phone number is 01223357708. Would you be interested in any restaurants or hotels while there? Sentence8: I am looking for a place to go in the centre of town. Sentence9: I have about 44 attractions to choose from in the centre. Can you tell me what type of attraction you are looking for? Sentence10: Yes, I would like to find a place to stay in the south with free parking. Could you help me? Sentence11: It is a guesthouse and the address is 53 roseford road. The phone number is cb22ha. Sentence12: Can you just choose one for me and give me the phone number? Sentence13: Please tell me your price range and hotel star rating preference. Sentence14: I'm sorry, can you provide that phone number again? I got a post code. Sentence15: I have rosa's bed and breakfast. It is in the south and cheap with 4 stars. Sentence16: I have 11 museums in the centre of town. They are all free. Do you have a type of museum in mind? Sentence17: The phone number for rosa's bed and breakfast is 01223512596 Sentence18: Maybe a museum would be nice. I am not sure. Question: Who has spoken the sentence 11? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Thank you. Could you help me find a museum that is in the east? Sentence2: Their phone number is 01223295264, and postcode is cb15dh. Sentence3: Sorry there are no records matching your request. Would you like to change your request? Sentence4: Okay. Your booking was successful. Your reference number is 42WW4454 . The table will be reserved for 15 minutes. Sentence5: Thank you so much. Do you know if there is an admission charge? Sentence6: You too! Thanks. Sentence7: You are very welcome. Sentence8: I have 5 different ones. 4 are in the centre of town and 1 is in the south. Do you have a preference? Sentence9: Thank you for allowing me to help you, have a great day. Sentence10: Great news, admission is free for that museum. Anything else I can help you with today? Sentence11: I'm looking for a restaurant recommendation. Sentence12: I would love to assist. Do you have a price range in mind? Sentence13: No, I just need a resrvation for 7 people at 17:45 on monday. Sentence14: Yes, you might want to try the gallery at twelve a high street in fulbourn. Sentence15: Yes, I am looking for a expensive scottish restaurant. Sentence16: Can you also tell me the phone number and postcode? Sentence17: Okay, let's try for an expensive Italian restaurant instead. Sentence18: Great! Thank you for all your help. Question: Who has spoken the sentence 8? (A) User (B) System
[EX A]:
Answer: (A) User