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

Q: Sentence1: Could you tell me more about it? What is its price range? Where is it located in the south? Sentence2: I'm sorry that date and time slot is already full. Would you like to try a different date/time? Sentence3: It is expensive and the address is 15-17 norman way, coldhams business park Sentence4: what about 4:30 on tuesday? Sentence5: There is one Mexican restaurant in the south. The Chiquito Restaurant Bar. Would you like me to book it for you? Sentence6: Thank you, that is all I need today. Sentence7: I am trying to find a restaurant in the south of the city that serves modern American food. Sentence8: I was able to book a table for 1 at 16:30. Your reference number is P62404I5 . Sentence9: I didn't find any modern American restaurants in the south end. Are you open to other areas? Sentence10: Sounds delicious, could you book a table for 1 at 17:30 on Tuesday? Sentence11: You are welcome. Goodbye. Sentence12: What about a restaurant there that serves mexican food? Sentence13: It is in the expensive price range and is located at 2G Cambridge Leisure Park Cherry Hinton Road Cherry Hinton cb17dy Sentence14: Great! Can you also tell me the address and price range for the Express by Holiday Inn Cambridge? Question: Who has spoken the sentence 4? (A) User (B) System

A: Answer: (A) User
****
Q: Sentence1: You pick the area as I don't have a preference. Sentence2: I found swimmingpools in the areas of east, north and centre. Which would you prefer? Sentence3: I am departing from stevenage on thursday. Sentence4: Parkside Pools is located at Gonville Place. Is there anything else you would like to know? Sentence5: Parkside Pools is a great place located in the centre, would you like more information? Sentence6: Yes please. Get me the address Sentence7: The TR9547 gets into Cambridge from Stevenage at 20:43. Will that work? Sentence8: Have a great day! Sentence9: Yes, I just needed info for now. Thanks for your help. Goodbye. Sentence10: I need a train, on Thursday. Arriving by 2145. Sentence11: Where will you be departing from? Sentence12: i just want a place to go with a swimming pool. Question: Who has spoken the sentence 9? (A) User (B) System

A: Answer: (B) System
****
Q: Sentence1: What is your destination site and what day are you planning to travel on? Sentence2: Yes I will get a confirmation number for 7 Sentence3: South area please. Sentence4: I need to arrive in birmingham new street by 17:45 on wednesday. Sentence5: Please for Wednesday at 14:45. Sentence6: Have a good day! Sentence7: I have train TR5558 arriving on 17:44 is that okay? Sentence8: Thanks. I am also looking for a cheap Chinese restaurant. Can you help me with this? Sentence9: Thanks for you help. That is all. Sentence10: Would you prefer in the Centre or South area? Sentence11: Thanks. Again, it is for Wednesday. Sentence12: Thank you for all your help. That will be it for now. Sentence13: Yes, that will work. Can I make a booking for 7 people please? I will need a reference number. Sentence14: For all 7 of us, and I'll need the reference number for that as well. Sentence15: I have found The Lucky Star that meets your requirements. Would you like me to book it for you? Sentence16: I need a train leaving cambridge I want to be at my designation by 17:45. Sentence17: Thank you is there anything else today that I can help you with? Sentence18: How many people will be in your party? Sentence19: Booking was successful for TR5558. The total fee is 525.69 GBP payable at the station. Reference number is: 7GOR98HS . Do you need further assistance with anything? Sentence20: Great. Your reference number is TIA1WMSZ . Question: Who has spoken the sentence 6? (A) User (B) System

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