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

Sentence1: book a table for 6 people at 12:00 on wednesday Sentence2: Are you looking for one in a particular area? Sentence3: I'm looking for parks in Cambridge can you help me? Sentence4: No, area doesn't matter. What park would you recommend? Sentence5: Thank you that is all I need for now. Sentence6: Okay great! I hope you have a wonderful day! Sentence7: Tandoori Palace in the west is a wonderful Indian restaurant. Would you like their phone number or a reservation there, perhaps? Sentence8: I was able to book a table for 6 they will hold the table for you for 15 minutes. The reference number is M4ILDKD4 . Sentence9: The postcode is cb18dw. Sentence10: There are fifteen Italian restaurants in town. Do you want a specific part of town, or maybe a certain price range to narrow down the search? Sentence11: I need help finding a book on italian food Sentence12: No just the postcode please. Sentence13: Thanks. Could you help me find and expensive Indian restaurant perhaps? Sentence14: Cherry Hinton Water Play park in the east is an excellent place to keep cool on hot summer days. Would you like the address? Question: Who has spoken the sentence 4? (A) User (B) System
Answer: (A) User

Sentence1: I was just involved in a car accident. Sentence2: You should contact this number: 01223358966. Sentence3: The address is Parkside, Cambridge, postcode CB11JG. Sentence4: Yes, I have a passenger that is hurt. How can I get to the hospital to make sure they are okay? Sentence5: You are welcome. Have a great day. Sentence6: I'm very sorry to hear that! Have you called the police yet? If not here is their number 01223358966. Is there anything else I can help with? Sentence7: Thanks, what's the address and postcode to the police department? Sentence8: Thank you for the info. That'll be all for now. Question: Who has spoken the sentence 2? (A) User (B) System
Answer: (A) User

Sentence1: Where will you be departing from, and what is your destination? Sentence2: Is there an exact address, like a street number? Thanks! Sentence3: Great. Thanks for all your help! Sentence4: It has been booked. Your total fee is 37.79 GBP, which is payable at the station. Your reference number is 2X743C2D . Sentence5: Yes, can you book it for 1 person, please? Sentence6: Yes, I'm also looking for a train that leaves on Friday after 11:15. Sentence7: The TR3877 leaves at 12:09 on Friday. Would you like me to book it for you? Sentence8: It is on Saint John's Street, though it doesn't have an exact street number. Is there anything else you would like to know? Sentence9: Saint John's College is in the Centre of town on Saint John's Street. The entrance fee is 2.50 Pounds. Can I help you with anything else? Sentence10: You're welcome. Have a good day! Sentence11: cambridge is my destination and from leicester Sentence12: Can you help me find information on saint john's college? Question: Who has spoken the sentence 7? (A) User (B) System

Answer: (B) System