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

Example Input: Sentence1: Let's go with the cheap one. I'll need a table for 7 on Sunday at 12:15 please. Sentence2: Can you try on saturday, 7 people, at 12:15 Sentence3: you're in luck I have two options for you. One is in the cheaper price range, the other is listed as moderately priced. Do you have a preference? Sentence4: Unfortunately the booking was not successful. Sentence5: Yes, you're booked for Saturday with reference number V54FG5X2 . The table will be reserved for 15 minutes. May I help with anything else? Sentence6: Thank you, goodbye! Sentence7: No, that's all I need. Thanks for your help! Sentence8: Yes I would like to find Spanish food in the center of town. Question: Who has spoken the sentence 7? (A) User (B) System
Example Output: Answer: (B) System

Example Input: Sentence1: Sure, what will your arrival station be? Sentence2: Thank you! What kinds of restaurants are available? Sentence3: Yes, please. For Friday. 3 people at 16:30. Sentence4: Oh thank you so much. I also need a train from Bishops Stortford, can you help with that? Sentence5: Your welcome, Have a nice day. Sentence6: sure, i have 9 options for you Sentence7: Sure. The Graffiti is a restaurant that serves British food. The phone number is 01223277977. Would you like to make a booking? Sentence8: It is a total time of 38 minutes for the trip. Anything else that I can assist with? Sentence9: The departure time is 09:29. Is there anything else that I can help you with today? Sentence10: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 86G11ZVP . Sentence11: I will be heading into Cambridge. I will need it for Friday arriving by 12:00. Sentence12: Are there any expensive places to dine in the West? Sentence13: No that's ok. I just need the travel time. Sentence14: TR2083 will arrive at 10:07. Want to book? Sentence15: Nothing else today. Thanks so much for your help. Bye. Sentence16: Yeah, can you confirm the time I need to be at the station? Sentence17: I see british, european, and indian available. Sentence18: Can you tell me about one of the restaurants that serves British cuisine? Question: Who has spoken the sentence 8? (A) User (B) System
Example Output: Answer: (A) User

Example Input: Sentence1: The arrival time of the train TR9937 from cambridge to norwich will be same Thursday by 22:55. Is that okay with you? Sentence2: ok, the TR9937 leaves at 21:36 Sentence3: How many tickets do you need? Sentence4: i am also looking for a guest house called a and b guest house. Sentence5: The A and B Guesthouse is a moderately priced 4 star guesthouse in the east. It has free internet, but no parking. Would you like me to book it for you? Sentence6: sure thing, they are located at 124 tension road Sentence7: Is there anything else I can assist you with today? Sentence8: This trip is for 79 minutes and costs 17.60 pounds. Would you like me to book this for you? Sentence9: What is the total travel time for this trip? Sentence10: Okay great. Thanks for calling. Sentence11: I need a train to Norwich, leaving after 21:30. Sentence12: No, that is all I need today. Thank you. Sentence13: I'll be leaving from Cambridge Sentence14: Yes if you could book it that would be great. Sentence15: OK! Do you have all the information you need? Sentence16: I just need the address. Sentence17: Great, thanks so much! Sentence18: On what day will you be traveling on? Sentence19: I am leaving on Thursday. Sentence20: Where are you departing from please? Sentence21: What would be the arrival time of that train? Sentence22: I don't need any reservations today just information. Question: Who has spoken the sentence 17? (A) User (B) System
Example Output:
Answer: (B) System