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

Example Input: Sentence1: Where would you be departing from and when would you like to leave? Sentence2: There are four restaurants that serve British food near the centre that are moderately priced. Do you want more information on these restaurants? Sentence3: Actually, sorry. Do cancel the other booking because I didn't ask for it. Make the booking for 7 people on a train leaving after 15:45 from norwich to cambridge on tuesday Sentence4: What is your destination? Sentence5: No i will keep it Sentence6: i'm also looking for a train. Sentence7: Oh no! There no english restaurants that I can find right now. Would something else work? Sentence8: Okay thank you for calling. Sentence9: Glad to have been of help. Thank you for using the Cambridge TownInfo centre. Have a great day Sentence10: Im leaving Cambridge at 11:00 Sentence11: Your tickets have been booked. Your new reference number is 8XIKH0Z9 . Sentence12: it is called restaurant one seven and there phone number is 01223337766 Sentence13: Like I aid there are no listings for english food,another type of food? Sentence14: Actually, I am traveling on Tuesday. I need to leave after Norwich after 15:45. I need a booking for 7 people. Sentence15: nevermind, i'm going to cambridge not from it. i'm leaving from norwich Sentence16: I'm looking for a local restaurant to dine at that serves english food and is moderately priced. Sentence17: Yea can you recommend one and get my the phone number please? Sentence18: Perfect. Sorry about all the confusion and thanks for your help. Have a great day. Sentence19: I have booked you on TR8662 which leaves Norwich at 11:16 on Friday and takes 79 min to get to Cambridge for 17.60 pounds. Reference R42CEKG8 Sentence20: Are there any restaurants that serve british food? Sentence21: So you want to cancel the other booking? Sentence22: I'm looking for something with a moderate price range near the centre. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: How many tickets will you be needing today? Sentence2: That is all, thanks. Sentence3: I booked 4 tickets on train TR4187, your reference number is LXZWA3Q8 . A total of 66.4 GBP is payable at the station, can I help you with anything else? Sentence4: All right, the TR4187 leaves at 13:59 and arrives at 15:27. Would you like me to book that for you? Sentence5: I have some moderate priced hotels in the north and center. Do you have a location preference? Sentence6: Booking was successful. Reference number is : P39PYOK0 . Can I help you with anything else? Sentence7: Where will you be traveling from, and what day would you like to travel? Sentence8: Yes, please book it for me. Sentence9: I would like a moderate price hotel in Cambridge. Sentence10: I also need info on a train. It should arrive in london liverpool street by 16:30. Sentence11: I need 4 tickets, and the price and train ID Sentence12: I will be departing Cambridge on Friday. Sentence13: Either one is fine. I need to book it for 5 nights on Wednesday. There are 4 people. Sentence14: There are two 2 star hotels in the north part of town. Ashley Hotel and Lovell Lodge. Both include free internet and parking. Do you have a preference? Sentence15: I will work on that and be back with you in a moment. Sentence16: Sure. What is your price range and what side of town will you be interested in? Sentence17: Hi, I am planning a trip and could use some advice on a place to stay. Sentence18: I'm not concerned about the area but it doesn't need to include internet. Sentence19: You're welcome, let me know if I can assist with anything else. Sentence20: Let me know when your break is over. I'll need a reference number please. Question: Who has spoken the sentence 9? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Okay I will do that now. Thank you. Sentence2: Please help, I've been in a car accident and am not sure who to call for help. Sentence3: You're more than welcome. Sentence4: call the police at 01223358966 Question: Who has spoken the sentence 2? (A) User (B) System
Example Output:
Answer: (A) User