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

[EX Q]: Sentence1: Booking was successful. Your reference number is : 1F0GOZ1D . Sentence2: Can you try 4 nights instead? Sentence3: I recommen a and b guest house. Should I book that? Sentence4: We have 6 total guesthouses in the east, any more preferences? Sentence5: Not particularly. Do you have one you would recommend? Sentence6: Yes, I would like free wifi and a 4 star rating. Sentence7: I'm looking for a guesthouse in the east please. Sentence8: funky fun house would be nice for you Sentence9: Great, could I also find someplace near the hotel to go for fun? Sentence10: Unfortunately there are no rooms available for Wednesday in the East. Could I look at a different location or day? Sentence11: please, For 2 people for 5 nights starting on Wednesday Sentence12: I have six places, is there a price range you have in mind? Question: Who has spoken the sentence 6? (A) User (B) System
[EX A]: Answer: (A) User

[EX Q]: Sentence1: Yes. I will be staying 5 nights starting Friday. Sentence2: Im also looking for the cow pizza kitchen and bar. Whats the address for it? Sentence3: its address is Corn Exchange Street. what else can i do for you? Sentence4: Oh, expensive please. I do hope it is a guesthouse? Sentence5: You have helped me with everything I need. Thank you. Sentence6: Anytime. Enjoy your visit. Sentence7: I'll be staying for 5 nights. Sentence8: Unfortunately they are both hotels. Sentence9: Booking was successful. Reference number is : GQPN80PK . Is there anything else I can assist you with today? Sentence10: Okay I've got three options here. Would you like a cheap or an expensive price range? Sentence11: Can you help me locate a hotel to stay at that has free parking and a 4 star rating? Sentence12: Oh. I would really prefer a guesthouse. How about the moderate price range? Sentence13: Okay, I recommend The Acorn Guesthouse. Would you like me to book there? Sentence14: NO problem. How long are you staying? Sentence15: The location isn't important. I need to book it for Friday, please. Sentence16: They are moderate, it is a gastropub, in case you need them, the postal is cb23qf and the phone number is 01223308871, can I assist with anything else? Sentence17: I have 9 guesthouses in the moderate price range, do you have a location preference? Sentence18: I need it's price range please Question: Who has spoken the sentence 1? (A) User (B) System
[EX A]: Answer: (B) System

[EX Q]: Sentence1: Does that train leave on Wednesday and go to Cambridge? Sentence2: ok thank you. I would like to book a ticket on TR4351 since that is the closest time you guys have. Sentence3: I need a train from leicester that leaves after 14:30. Sentence4: The travel time is 105 minutes. Is there anything else you need? Sentence5: No, just pick one and book it and provide me with the reference number please. Sentence6: What area would you like the indian restaurant to be in? Sentence7: That's great you've been a big help. Sentence8: The earliest train that day leaves at 15:09. Do you want to book it? Sentence9: Can you tell me what the total travel time is for the entire ride? Sentence10: Glad I could help, have a great day. Sentence11: Just a table for 1 at 18:45 on Wednesday please Sentence12: What day, time, and party size would you like to book? Sentence13: I would like it in the west please. Sentence14: I'm also looking for a expensive indian restaurant. Sentence15: I found 5 restaurants that are expensive Indian restaurants in the west area. Do you want information on all of them? Sentence16: It arrives at 16:54 and is 37.80 pounds. Is there anything else you need? Sentence17: I have booked your table for 1 on Wednesday at 18:45 at Cocum. They will hold your table for 15 minutes. Your Reference number is : JZ2XD42N . Sentence18: What time will it arrive? How many minutes does it take to get there? Can you tell me the price? Question: Who has spoken the sentence 16? (A) User (B) System
[EX A]:
Answer: (A) User