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

[Q]: Sentence1: book a table for 6 people at 11:15 on tuesday at the Hakka Sentence2: Sure what type of food are you wanting to eat? Sentence3: Do they have free wifi? Sentence4: I booked the taxi, it is a yellow tesla the contact number is 07809860598. Is there anything else I can assist with today? Sentence5: I will need a taxi to get to the restaurant. Sentence6: Booking was successful, and your reference number is TDVD6XSM . Is there anything else I can assist you with? Sentence7: That is all, thank you for your help. Sentence8: The Hamilton Lodge sounds perfect for you. Would you like to know more? Sentence9: I'm glad we were able to help. Sentence10: I would like to find an expensive restaurant in the north part of Cambridge. Sentence11: Yes, they do have internet. Shall I make a booking? Sentence12: There 2 of them - the Hakka and the hotpot. Which one would you like to try? Sentence13: Yes please. I want 4 nights from tuesday, and for 6 people. Give me the reference number too. Sentence14: I am looking for a hotel in the same area that has free parking. Sentence15: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 48WF5G7X . Can I help with anything else? Sentence16: How about chinese food? Question: Who has spoken the sentence 15? (A) User (B) System
[A]: Answer: (B) System


[Q]: Sentence1: You are booked for a red lexus with the contact number 07866626052. Sentence2: I'm going to loch fyne. Sentence3: Thank you. I am now finished. Sentence4: Sure! when would you like to arrive? Sentence5: Great! And what is your destination? Sentence6: I would like to arrive by 01:15. Sentence7: I'm glad we could help. Have a good day. Sentence8: Please help me reserve a taxi from saint catharine's college Question: Who has spoken the sentence 2? (A) User (B) System
[A]: Answer: (A) User


[Q]: Sentence1: That sounds great! Could you give me the arrival time, travel time, and train ID as well? Sentence2: Okay, that's great! Thank you very much! That's all I needed. Sentence3: Sure. It's train TR8265, arrives at 10:43 in Cambridge and has a duration of 49 minutes. Can I book you seat? Sentence4: There are many expensive restaurants in the city. Do you have an area or type of cuisine that you'd prefer? Sentence5: I would recommend bedouin, address is 100 Mill Road City Centre,phone is 01223367660 and post code is cb12bd. Sentence6: No, that would be all. Thanks. Bye. Sentence7: Hey there, I need a train from stevenage that leaves after 09:45. Can you help? Sentence8: Alright, thanks for using Cambridge TownInfo centre! Have a great day! Sentence9: Maybe later. I am also looking for an expensive restaurant. Sentence10: We are going to cambridge and would like to leave on monday after 09:45. Thanks for your help. Sentence11: I would be happy to help with your request, what is your destination and what day will you be leaving? Sentence12: Is there anything else I can help you with today? Sentence13: Would a train departing at 09:54 work for you? Sentence14: No, I'll take your recommendation. I do need postcode, address and phone number, please. Question: Who has spoken the sentence 13? (A) User (B) System
[A]:
Answer: (B) System