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

Example Input: Sentence1: There are 2 expensive French restaurants. Restaurant Two Two, and Cote. Which would you like to book? Sentence2: No, that's everything I needed today. Thank you. Sentence3: Are you able to find me a french expensive restaurant? Sentence4: You're quite welcome! Thanks for contacting the Cambridge TownInfo Centre and have a great day! Sentence5: I like the sound of Restaurant Two Two, could you give me their postcode, address and phone number? Sentence6: Restaurant Two Two is located at 22 Chesterton Road, Chesterton. Their postcode is cb43ax. You can reach them at 01223351880. Any other information I can provide? Question: Who has spoken the sentence 5? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Booking was successful, the total fee is 450.6 GBP payable at the station . Reference number is : G368B2VI . Can I help with anything else today? Sentence2: I would like to stay in the centre of town please. Sentence3: TR0254 Leaves at 05:40, would you like me to book that for you? Sentence4: I will be departing from Birmingham New Street on Tuesday. Sentence5: The price is 75.10 pounds and it is a 163 minutes ride. Can I help you with anything else? Sentence6: Please book 6 tickets and send me the reference number. Sentence7: No thank you. Please tell me about the ticket pricing and time of travel Sentence8: Okay, the postcode is cb11ly. What else can I help with? Sentence9: No, not yet. I just need the postcode. Sentence10: Thanks for using Cambridge TownInfo centre. Have a great day! Sentence11: I'm looking for a train that goes to Cambridge and arrives by 08:45. Sentence12: The Gonville Hotel will meet all of your needs. Would you like me to book it? Sentence13: I found two expensive hotels, one in the centre and one in the south of town. Do you have a preference? Sentence14: Again, 3 star with free wifi. I don't care about the price. It has to be in the centre, though. Sentence15: That is all, thank you for your help today. Sentence16: Yes please. I need a 3 star hotel that offers free wifi Sentence17: I found 231 trains that fit your request. Where will you be departing from? Sentence18: What price range and what star rating are you looking for ? Question: Who has spoken the sentence 3? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: The train that will have you arrive closest to the time of 16:45 is TrainID TR9024. Would you like me to secure a reservation? Sentence2: I was happy to help you today. Please contact us again, if you need further assistance. Good-bye. Sentence3: I can help with that. What is the date and time you would like to leave? Sentence4: No that will be all! Thank you! Sentence5: Yes. May I please get the phone number to Churchill College? Sentence6: How many tickets do you need? Sentence7: I want a train leaving on sunday. Sentence8: I would recommend Churchill College on Storey's Way. They have free admission. Would you like anything else? Sentence9: I changed my mind, don't worry about getting me a train reservation. Just please recommend an attraction to visit on the West side of town Sentence10: Yes please. And can I have the reference number? Sentence11: Yes the number is 01223336233. Is there anything else you need assistance with today? Sentence12: I need to leave cambridge and go to kings lynn and arrive by 16:45 on sunday Question: Who has spoken the sentence 10? (A) User (B) System
Example Output:
Answer: (A) User