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

Sentence1: Limehouse for 1 person, 3 nights and starting on Sunday. Sentence2: Yes, of course. How many people are in your party? Sentence3: What area of town would be your preference? Sentence4: The range does not matter. Just the Indian place you think best. Sentence5: Yes what area are you looking to dine in? Sentence6: You're welcome, glad I could help. Sentence7: Is that a guesthouse? Sentence8: Thank you. I am also looking for a place to stay. It doesn't need internet and should be moderately priced. Sentence9: I would recommend the The Golden Curry. Would you like to make a reservation? Sentence10: That's okay. How about Indian? Sentence11: I sure can. What type of restaurant are you looking for? Sentence12: Thank you for all your help. Have a great day. Sentence13: I'm looking for Cuban food. Sentence14: It is a guesthouse. Would you still like me to book it? Sentence15: I don't have a preference. What would you recommend? Sentence16: There are no Cuban restaurants unfortunately. Sentence17: Yes, let's make it for 1 person at 19:45 on sunday. Sentence18: Yes, I love guesthouses when I travel alone. Can you book it for three nights please, starting on Sunday. Sentence19: I'd recommend the Limehouse, it's in the north and has 4 stars. Would you like me to book a reservation? Sentence20: Your reservation is successful, they'll hold the table for you for 15 minutes. Reference number is 6CVKLM3F . What else can I help you with? Sentence21: In the Centre as well please. Sentence22: I have 9 restaurants available. What price range would you prefer? Sentence23: Would you be so kind as to help me find a place to dine later? Sentence24: Booking was successful. Reference number is : 2VEHCBYQ . Question: Who has spoken the sentence 13? (A) User (B) System
Answer: (B) System

Sentence1: 5 nights, please. Sentence2: Sure. Please book five tickets for me and reply with the reference number. Sentence3: It's booked and your reference number is LFE8G8CE . The address is 154 chesterton road and postcode is cb41da. Anything else I can do for you? Sentence4: Where will you be departing from? Sentence5: Enjoy your visit. Please give us a call if you need further assistance. Sentence6: 5 people starting on Sunday. Sentence7: Yes, what area would you like to stay in? Sentence8: Great, let's book that one. Please send me the address, postcode and reference number. Sentence9: Booking was successful, the total fee is 22 GBP payable at the station. Reference number is : BUBQRD4R . Sentence10: Yes I also need a train that leavers after 12:00 going to ely. Sentence11: There is the Acorn guesthouse in the moderate price range and 4 stars. It also has free wifi and parking. Sentence12: There is no train leaving 12:00, but train TR5484 leave 13:50 do you want to adjust your time? Sentence13: Don't care. but I'd like a place that's Moderately priced and offers free WiFi. Sentence14: East London. Thanks Sentence15: How many days do you plan on staying? Sentence16: That is all I need, good bye. Sentence17: How many people would you like it booked for and for what days please? Sentence18: Hi, I am hoping to find a 4 star hotel room. Can you recommend one for me? Question: Who has spoken the sentence 9? (A) User (B) System
Answer: (B) System

Sentence1: I have none listed like that,a different price range maybe? Sentence2: Booking was successful.Reference number is : AENEDXFY Sentence3: There are two options here. Would you prefer the south or the centre? Sentence4: sorry about that! why yes, there are 10 options for inexpensive hotels. Sentence5: Sounds good. 1 person, 4 nights and leaving from Wednesday. Sentence6: You are set, ref number is CPD3XEJI is there anything else I can help you with? Sentence7: What date and time for your reservation? Sentence8: Can you try the other restaurant? Sentence9: I am in the process of completing your reservation and nandos city centre. What day will you be dining? Sentence10: Thank you for using our service, and enjoy your time in Cambridge! Sentence11: Would you like me to make you a reservation at nandos city centre? Sentence12: Sure. Just give me the reference number once you do it Sentence13: No I think I bugged you enough! You have been great and fast too! Sentence14: I would suggest autumn house Sentence15: How many people for the restaurant? Sentence16: Make the reservation for wednesday and then give me the reference number Sentence17: Nandos is located both in the south and in the centre. Would you like me to make a reservation for you? Sentence18: The reservation should be at 13:00 Sentence19: I also need a restaurant, preferably one that serves portuguese food and is the same price point as my hotel. Sentence20: I would like to have a 4 star rating with free parking. Sentence21: I don't mind. Surprise me! Sentence22: I'm currently planning a visit to Cambridge and looking for a cheap place to stay. I don't need internet or any frills. Any good suggestions? Sentence23: There will be just me. Sentence24: Yes, that would be fantastic. Thank you very much. Sentence25: I am unable to book it right now. Sentence26: So, you are saying there are no cheap hotels in all of Cambridge? Can you maybe look one more time? Thanks! Question: Who has spoken the sentence 21? (A) User (B) System

Answer: (B) System