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

Sentence1: Does it have internet? Sentence2: I can help you with that I just need to know what time you'd like to be picked up from the guesthouse? Sentence3: No, that is it. Thank you so much. Sentence4: I have 3 great guesthouses in the east. I recommend Warkworth House. Would you like to book a room? Sentence5: The Yu Garden is a Chinese restaurant in the East, would you like to book a table? Sentence6: How about a Chinese restaurant? Sentence7: There are no australasian restaurants in the east. Would you like to try a different cuisine or can I check another area for you? Sentence8: Can i get the address and number to Yu Garden? Sentence9: I'm happy to be of service, and thank you for using the Cambridge TownInfo Centre! Sentence10: I would like to leave at 5:45. Sentence11: Yes it does. Would you like to make reservations? Sentence12: Hi, I am looking for a nice moderately priced hotel located in the east. Sentence13: Okay, thanks. I'm also looking for a place to eat that serves Australasian food. Can you help me with that? Sentence14: Warkworth does offer internet. Sentence15: Yes, the address is 529 Newmarket Road Fen Ditton and the postcode is cb58pa. Sentence16: The taxi will pick you up at the guesthouse at 05:45 and will be in a white lexus. Their contact number is 07730745339. Is there anything else I can help you with? Sentence17: Thank you. I also need a taxi to get between the two places. Sentence18: Maybe. Does it have 4 stars? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

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: I am looking a restaurant in the Centre Cambridge area that serve gastropub food. Sentence2: I have one result for you. It is cityroomz, a 0 star hotel. Do you want to book this? Sentence3: Can you book for 2 nights> Sentence4: I am unable to make a booking for that right now. Is there anything else I can do for you? Sentence5: Moderate price range. Sentence6: I have booked you a car. It's a blue Skoda, and the contact number is 07324436761. Sentence7: Your room is reserved under ref# XP513560 . Is there anything else I can help you with today? Sentence8: I will also need a taxi to take me to the restaurant and hotel. Sentence9: I can find it, but please give me the reference number for the reservation. Nil is such a creative name for a restaurant! Sentence10: Thanks, that's all I needed today. Goodbye! Sentence11: I want to make sure it arrives the restaurant by the booked time. Sentence12: The Nil moderately priced restaurant is in the centre and serves gastropub food. Would you like a reservation? Sentence13: Yes, it most certainly is. The booking was successful, and they will hold your table for 15 minutes. The booking number is CXFENRLZ . Anything else I can assist you with? Sentence14: Does it have free wifi? Sentence15: I also need a place to stay, moderately price, centre area, doesn't matter whether or not it has wifi. Sentence16: Yes it does actually. Sentence17: Yes, I can make the reservation would you like their address? Sentence18: Great, I'm glad I could help! Bye! Sentence19: Oh yessiree, tuesday 6 people and 5 nights please Sentence20: When would you like to arrive by. Sentence21: I have 3 in the centre of town,what price range please? Sentence22: That would be great. Can you make if for a party of 6 on Tuesday at 15:30? Question: Who has spoken the sentence 4? (A) User (B) System

Answer: (A) User