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

Sentence1: I need to leave on Wednesday sometime after 16:30. Sentence2: There are 21 guesthouses that include parking. Is there a price range or area you would like to stay? Sentence3: I need some help choosing a train from Cambridge to London King's Cross. Sentence4: It doesn't matter, we will also need wifi, and will be staying for 2 nights, starting on Monday. Sentence5: That sounds great. Can you go ahead and book it for me? Sentence6: I would recommend the Alexander Bed and Breakfast then. Sentence7: Your welcome! Please have a nice day! Sentence8: I have a train leaving at 17:00 and arriving at 17:51 would you like to book this? Sentence9: That's lovely. We also require lodging. Could you help find a guesthouse with free parking? Sentence10: Thanks so much! I'm all finished now, goodbye! Sentence11: Yes please make a booking for 3 people. Sentence12: Alright I booked it. Reference number is I5AR5Q3J Sentence13: The booking was successful. Reference number is : IGMRVY4Y Sentence14: The next train leaves Cambridge for London Kings Cross on Friday at 05:00. What day do you want to travel? Question: Who has spoken the sentence 9? (A) User (B) System
Answer: (B) System

Sentence1: I would like a moderate price hotel in Cambridge. Sentence2: Either one is fine. I need to book it for 5 nights on Wednesday. There are 4 people. Sentence3: I'm not concerned about the area but it doesn't need to include internet. Sentence4: I will work on that and be back with you in a moment. Sentence5: Hi, I am planning a trip and could use some advice on a place to stay. Sentence6: There are two 2 star hotels in the north part of town. Ashley Hotel and Lovell Lodge. Both include free internet and parking. Do you have a preference? Sentence7: Sure. What is your price range and what side of town will you be interested in? Sentence8: I have some moderate priced hotels in the north and center. Do you have a location preference? Question: Who has spoken the sentence 3? (A) User (B) System
Answer: (B) System

Sentence1: Good morning! I'm trying to buy a train ticket that goes from Peterborough to Cambridge. Can you help me do this? Sentence2: Yes please. I need 5 seats. Sentence3: The train should leave on Sunday and should arrive by 16:45 Sentence4: No, I'm sorry, that's much too early. Could you find one closer to 16:00 or 16:20? Sentence5: The latest train departs at 15:48. Does that work for you? Sentence6: I have a train arriving at 08:09 that leaves at 07:19? Sentence7: There is the Man on the Moon in the Centre located at 2 Nofolk St. Their phone number is 01223474144 Sentence8: Booked! At the station you will pay 66 pounds. Reference number: JQ91RH6X . Sentence9: Sure, how about one that is in the type of entertainment? Sentence10: Okay, have a good day as well. Sentence11: I don't see anything in that area. Can I search a different area or venue for you? Sentence12: Thank you for all your help today. Have a great day. Sentence13: Can you give me the postcode and entrance fee? Thanks. Sentence14: I don't have the entrance fee, but the postcode is cb12lf. Sentence15: 16:38, fifty minute travel time. Shall I book it? Sentence16: Great I also need to find a concerthall to visit in the south. Sentence17: I can absolutely help! Do you have a specific day and arrival/departure time? Sentence18: For the one that departs at 15:48, what time would I arrive? Question: Who has spoken the sentence 2? (A) User (B) System

Answer: (A) User