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

Example Input: Sentence1: Thank you for the help, have a nice day. Sentence2: Hi, kohinoor is a cheap Indian restaurant, but doesn't specify that it is South Indian. Would you like the phone number? Sentence3: There are 8 trains that will arrive by 21:45. What time would you like to depart? Sentence4: how about 17:00. Sentence5: Great! I am also looking for a train that leaves on thursday and departs from cambridge. Sentence6: Hi, I'm looking for a place to eat, preferably a cheap South Indian restaurant. Sentence7: How many tickets do you need? Sentence8: Yes, that would be great. Could I get a reference number please? Sentence9: Is it in the centre of the city? Sentence10: Would you like for me to book a table at Kohinoor for you? Sentence11: What's the last train to arrive by 21:45? Sentence12: Yes, it is indeed in the centre. The phone number is 01223323639 Sentence13: Destination is Stevenage. I would like to arrive by 21:45. Can you book the train for me as well? Sentence14: It would be the one leaving at 19:21 and arriving at 20:10. Shall I book it? Sentence15: I need 1 ticket. Sentence16: Booking was successful, the total fee is 12.8 GBP payable at the station . Reference number is : 5TM8STAM . Sentence17: What is your destination? Sentence18: Yes, please. 18:00 on Wednesday for just myself. Sentence19: I'm sorry, they're all booked up at that time. Would you like to try a different time? Sentence20: It was a pleasure to serve you have a great day Sentence21: I was able to book that, your reference number is HEJFVRPP . Sentence22: Ok, thank you. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: There are more than one hundred entries that match your requirements. What type of food do you prefer? Sentence2: I'm positive. There are however three hotels that have four stars that have free wifi, if you would like to view those options. Sentence3: A 4 star rating is fine, what do you have for that? Sentence4: The only French restaurant that fits your criteria is called Cote. They do not have any availability for Wednesday at 12:30. Sentence5: My pleasure. Have a great day! Sentence6: Wonderful! That's all I need. Thank you very much for your help! Sentence7: I prefer French Cuisine, can you find somewhere that will take reservations for 3 people at 12:30 on wednesday? Sentence8: Are you sure? I would prefer a 5 star hotel with free wifi. Sentence9: I have two in the west area and one in the centre area. Do you have a preference? Sentence10: Thanks I also need to find a hotel with a 5 star rating. Sentence11: Are there any expensive places to eat in the centre? Sentence12: That was a success. Your reference number is 2GY5ULLL . Sentence13: Can you try for 11:30 and give me a reference number please. Sentence14: The booking for the University Arms Hotel was successful, and your reference number is 414HUS87 . Sentence15: Unfortunately, I do not show any 5 star hotels. Would you like to try a different rating? Sentence16: The one in the centre area is fine. Can you please book it for 3 people, starting on Wednesday for 4 nights and can I please have the reference number? Question: Who has spoken the sentence 11? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Can you please tell me your departure and destination locations? Sentence2: Have a great day. Goodbye. Sentence3: its address is anglia ruskin university, east road and it has a free entry Sentence4: I am planning a trip in Cambridge Sentence5: Yes, Can you please tell me the travel time? Sentence6: Thanks! I'm also looking for a train leaving on wednesday and arrive at 12:00 Sentence7: Thank you for contacting the Cambridge TownInfo centre. Goodbye. Sentence8: That is all I need today. thank you. Sentence9: what is their postcode and phone number? Sentence10: you are very welcome Sentence11: I will leaving Norwich and going to Cambridge. Sentence12: Their postcode is cb11pt and phone number is 0124549131 Sentence13: The TR1180 will leave Norwich for Cambridge Wednesday at 09:16 and arrive at 10:35. The cost of the train is 17.60 lbs. Would you like me to book it? Sentence14: No, but I do need some information on the Ruskin Gallery. Sentence15: Thank you. Will the train provide any snacks or a meal? Sentence16: Thank you so much! Sentence17: you are so welcome Sentence18: the trip is 79 minutes long Sentence19: Excellent! Do you need assistance with transportation arrangements? Sentence20: I am sorry but we are not given that information in our systems, you will have to ask when you arrive. Question: Who has spoken the sentence 15? (A) User (B) System
Example Output:
Answer: (B) System