Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: Sure. TR0743 will be the train you want, and it has a travel time of 49 minutes. Sentence2: Booking was successful. Your reference number is OG3NRCWJ . Will that be all? Sentence3: Yes thank you. 2 nights for two people starting on monday. Sentence4: I also need a train going to Stevenage on Tuesday. Sentence5: And from where are you departing? Sentence6: Do you know which hotel or the area the hotel is in? Sentence7: Yes I have located the University Arms and it is located in the center. Would you like a booking? Sentence8: I am departing from cambridge. Can you please provide me with the train id and travel time. thank you. Sentence9: I'd like to leave after 11:45, please. Sentence10: University Arms Hotel. Sentence11: Excellent, thanks for all of your help! Sentence12: Have a great day! Sentence13: Ok, where you departing from and what time would you like to leave? Sentence14: I am looking for a particular hotel. Question: Who has spoken the sentence 3? (A) User (B) System
Output:
Answer: (B) System