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

Sentence1: There are more than one hundred entries that match your requirements. What type of food do you prefer? Sentence2: I'm positive. There are however three hotels that have four stars that have free wifi, if you would like to view those options. Sentence3: A 4 star rating is fine, what do you have for that? Sentence4: The only French restaurant that fits your criteria is called Cote. They do not have any availability for Wednesday at 12:30. Sentence5: My pleasure. Have a great day! Sentence6: Wonderful! That's all I need. Thank you very much for your help! Sentence7: I prefer French Cuisine, can you find somewhere that will take reservations for 3 people at 12:30 on wednesday? Sentence8: Are you sure? I would prefer a 5 star hotel with free wifi. Sentence9: I have two in the west area and one in the centre area. Do you have a preference? Sentence10: Thanks I also need to find a hotel with a 5 star rating. Sentence11: Are there any expensive places to eat in the centre? Sentence12: That was a success. Your reference number is 2GY5ULLL . Sentence13: Can you try for 11:30 and give me a reference number please. Sentence14: The booking for the University Arms Hotel was successful, and your reference number is 414HUS87 . Sentence15: Unfortunately, I do not show any 5 star hotels. Would you like to try a different rating? Sentence16: The one in the centre area is fine. Can you please book it for 3 people, starting on Wednesday for 4 nights and can I please have the reference number? Question: Who has spoken the sentence 11? (A) User (B) System
Answer: (B) System

Sentence1: It doesn't matter, I just need to get there. Sentence2: I am sorry but that time is not available. Would you like to try another time or day perhaps? Sentence3: There is a restaurant called restaurant alimentum that meets your criteria. Sentence4: It's all booked, you're looking for a black volkswagen and their contact number is 07263669645. Sentence5: As a matter of fact, it appears all of the gastropubs in Cambridge have closed. Is there anything else that interests you? Sentence6: Have a great day! Sentence7: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 8HB62Z6W . Is there anything else I can help you with? Sentence8: Sure. What time would you like to leave the restaurant? Sentence9: I am looking for a gastropub in the south. Sentence10: The address is cambridge leisure park, clifton way. Can I do anything else for you? Sentence11: Yes, I'd like to see some entertainment near the restaurant. Could you recommend me something good? Sentence12: Are there any Gastropubs in town? Sentence13: Yes, it is. Nusha is in the South as well. Sentence14: Yes, I would like to book a taxi from the restaurant to the entertainment. Sentence15: How about Tenpin in the south? Sentence16: Great, thank you so much for your help! That's everything I'll need today! Sentence17: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence18: That will do. Please get me their address. Sentence19: How about a modern European cuisine in the south area? Sentence20: Let's book that for 12:45 on Tuesday. It will be for 7 people. Sentence21: I'm sorry I couldn't find any Gastropubs in the South. Is there another type or area which you would like to try? Sentence22: Splendid! Thank you for all your help. That's all I need. Goodbye. Sentence23: Could you try 11:45 please? Sentence24: Is it located near Alimentum? I'm looking for something in the same area as the restaurant. Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Sure. The Cambridge and County Folk Museum is one of the oldest social history museums in the UK and offers a various and unique collection of artifacts. Sentence2: their address is 2-3 castle street and their entrance fee is 3.50 pounds. Sentence3: Okay I will work on getting this done and get back to you. Sentence4: I am planning a trip to see the Cambridge and County Folk Museum. What can you tell me about it? Sentence5: Thank you for calling. Enjoy your trip! Goodbye! Sentence6: 3 people at 20:00 on teusday Sentence7: Your taxi booking was successful. You will be picked up by a white audi. The contact number is 07915378958. Anything else I can do for you today? Sentence8: Thank you. I will also need the reference number, please. Sentence9: There are four places to choose from. They range from cheap to expensive. Do you have a preference on the price range? Sentence10: I'd be happy to! How many people and for what time would you like to dine? Sentence11: de luca cucina and bar would fit your needs. they are located at 83 Regent Street, phone 01223356666, cb21aw. Would you like me to book reservations for you? Sentence12: Your table has been booked. The table will be reserved for 15 minutes. Your reference number is : 0Z5IJB27 . Can I be of any further assistance? Sentence13: Thank you so much for your time today. I appreciate your help! Goodbye! Sentence14: I would prefer something in the moderate range. Sentence15: I would like their entrance fee and address please. Sentence16: Yes, make a reservation for Tuesday please Sentence17: Great, thanks! Could you also help me find a modern European restaurant in the centre? Sentence18: Yes, I will need a taxi from the museum to the restaurant to arrive by 20:00 on Tuesday. Can you book that for me? Question: Who has spoken the sentence 4? (A) User (B) System

Answer: (A) User