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

Q: Sentence1: Your very welcome! Enjoy your stay! Sentence2: I'm sorry, but they don't have a room for that long. Would you like to shorten your stay? Sentence3: Great! That worked and your confirmation code is 4MI69WKV . Sentence4: Sure and I would like the address also. Thanks Sentence5: I need booking information,how many people,what day,and how many days you would like to stay. Sentence6: The arbury does have 4 stars. It is moderate priced. Would you like that one? Sentence7: You are welcome. If you need anything in the future, please let us know. Sentence8: Excellent! Now, what can you tell me about the Da Vinci Pizzeria? Sentence9: Have a great day! Thank you for your help! Sentence10: Sure, let's try 2 nights instead. Sentence11: No, that's all I need today. Thanks for all your help! Sentence12: Yes please that sounds good. Sentence13: Oh, wait, I don't think I completed the booking at Da Vinci Pizzeria we were talking about. If you'd still like it I'll need a time, day, and number of people. Sentence14: I am looking to stay for 1 person, 4 nights, starting wednesday. Sentence15: No that's ok. I just needed the address, no booking. Thank you! Sentence16: The Arbury lodge guesthouse should work out for you. Sentence17: It is located at 20 Milton Road Chesterton and offers Italian food at low cost. Would you like me to make a booking? Sentence18: Hi, I'm actually looking to stay at a luxury guesthouse. Sentence19: does it have a rating of 4 stars? Sentence20: Absolutely, I have made the booking and the address is 20 Milton Road in Chesterton. Is there anything else I can help you with? Question: Who has spoken the sentence 9? (A) User (B) System

A: Answer: (B) System
****
Q: Sentence1: How about Italian food instead and could I have the phone number if you find a restaurant Sentence2: There are no matching restaurants. Would you like me to perform another search? Sentence3: Prezzo is a moderately priced Italian restaurant in the west side of town. The phone number is 01799 521260. Sentence4: Thank you, goodbye. Sentence5: West side of town. Sentence6: Thank you good bye Sentence7: I want a restaurant with corsica food please. Sentence8: What is the area you would like? Question: Who has spoken the sentence 4? (A) User (B) System

A: Answer: (A) User
****
Q: Sentence1: Okay, please tell where you are going and where you are leaving from, and what day. Sentence2: Thanks for the service, goodbye. Sentence3: The reference number is,VAKDVQNB is there anything else I can do for you? Sentence4: Acorn guest house has that, will that work for you? Sentence5: I will need free wifi and parking. Sentence6: What time would you like to travel? There are trains every hour from 5:11. It takes 47 minutes to get there from Cambridge. Sentence7: I'm happy to be of service! Thanks for using the Cambridge TownInfo centre. Sentence8: I'd like to arrive by 17:30. Any trains that do that will be fine. I just need the price. Sentence9: TR8890 arrives at 16:58. It costs 9.80 pounds. Sentence10: I need a moderately priced 4 star hotel. Sentence11: book it for 7 people and 3 nights starting from sunday. Sentence12: I have many guesthouses that meet that criteria. Do you have a certain area in mind? Sentence13: I am going to Kings lynn from Cambridge. I leave Wednesday. Sentence14: I also need train tickets. Question: Who has spoken the sentence 4? (A) User (B) System

A:
Answer: (A) User
****