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

Sentence1: 4 people please. Sentence2: What area is it in? Sentence3: I'm looking for a hotel to stay in. I prefer something in the expensive price range, and also one that offers free parking. Sentence4: I also need a train going to Leincester from Cambridge. I want to leave on Monday and arrive at 13:00. Sentence5: Booking was successful. Reference number is : H9CE5KK3 . Can i help you with anything else? Sentence6: The gonville hotel is in the centre area and the lensfield hotel is in the south area. Would either of these hotels work for you? Sentence7: The gonville hotel may be a good option. Sentence8: Which day would you be arriving at the hotel, and how long will you be staying? Sentence9: yes can you please. thank you Sentence10: In that case, you'd prefer The Lensfield. Do you need to book a room? Sentence11: Wednesday for 4 people, just one night. Sentence12: i want the one in the south Sentence13: I'd like a place with 3 stars. Sentence14: The Lensfield Hotel or Gonville Hotel both meet your criteria. Would you like me to make a reservation for you at either option? Sentence15: How many tickets do you need? Sentence16: Your tickets have been booked. Your reference number is 6F8IVDHH . Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: Sure, that post code is cb39al. Can I further assist you? Sentence2: I'm interested in visiting colleges while in town, can you please recommend some? Sentence3: I can recommend clare hall and christ's college. You need phone numbers for either one? Sentence4: Okay the TR5009 leaves at 18:40. Sentence5: Yes I also need a train to stansted airport on sunday Sentence6: That sounds great, do I call to book a seat or can you help me? Sentence7: No, thanks. That's all I needed. Sentence8: I'm glad I was able to help you. Thanks for using our service have a nice day. Sentence9: Sure. Where will you be departing from, and what time? Sentence10: Please book for 6 people. Sentence11: I am leaving from Cambridge. I would like to leave sometime after 18:00. Sentence12: I would like the post code for clare hall please. Sentence13: I would be more than happy to help you book! Tickets are 8.08 pounds. How many tickets would you like me to book for your trip? Sentence14: Booking was successful, the fee is 48.48 GBP payable at the station . Reference number is 4ESBHTB0 . Is there anything else I can help you with? Question: Who has spoken the sentence 7? (A) User (B) System
Answer: (B) System

Sentence1: We have Cityroomz in the area. Would you like me to book you a room? Sentence2: Hello, I am going to nee a place to go in the centre of town. Multiple sports would be best. Sentence3: You can find Broughton House Gallery at 98 king street. The postcode is cb11ln, and entry is free. Sentence4: Starting on Wednesday please. 2 nights for 2 people. Sentence5: Yeah, that would be great. Thanks. Sentence6: Can I have the postcode, entrance fee and address? I also need a hotel within a moderate price range. Sentence7: Unfortunately, we don't have any attractions that match that description. Could you like to explore other areas? Sentence8: That would be the Broughton House Gallery. Do you need anything else? Sentence9: Are there any moderately priced hotels in that same area? Sentence10: No. Could we try a museum in the centre of town? Sentence11: That is everything I needed for today. Thank you for your help! Sentence12: OK, what nights and how many people? Sentence13: OK, you're all set for 2 nights at Cityroomz. Your reference number is NWD2GD50 . Can I help with anything else today? Sentence14: The are 11 entries found for "museum" at the center of town. Would you like the first listing? Sentence15: Thank you for using this system. Sentence16: Yes please. I need a room for 2 people for 2 nights starting wednesday. Question: Who has spoken the sentence 13? (A) User (B) System
Answer: (B) System