Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Input: Sentence1: I need to go to london kings cross by train Sentence2: Not yet. Can you just give me the phone number and postcode of the Worth House? Sentence3: How many stars would you like? Sentence4: Anything leaving a little bit earlier but after 15:30? Sentence5: Thank you for using Cambridge TownInfo centre. Please consider us for your future travel needs. Sentence6: Actually, that is the earliest train available that leaves after 15:30. The next train before that departs at 15:00 which wouldn't fit your criteria. Would you like to book any tickets? Sentence7: The North, please. Also, I would like a guesthouse in the cheap price range. Sentence8: Okay! Do you know where you want to depart from or the day of the trip? Sentence9: TR6626 leaves Cambridge on Friday at 17:00. Would that work for you? Sentence10: I guess that will have to do. Go ahead and book it. Sentence11: I can help you with that, but let me gather a few more details. What area of town would you like to visit? Sentence12: yeah. Cambridge to london kings cross.The train should leave after 15:30 on Friday Sentence13: Why thank you for your kind help! Sentence14: I will. Thanks for all the help! Sentence15: Thank you and enjoy your stay in Cambridge. Sentence16: The booking was successful. Your reference number is 23ELORQB . Sentence17: You're welcome. Is there anything else I can do for you? Sentence18: There are two options. City centre noth b and b and worth house. Would you like to make a reservation at one? Sentence19: Any is fine, as long as it has free parking. Sentence20: I also need a place to stay. Sentence21: Sure. The phone number is 01223316074 and the postcode is cb41da. Sentence22: That was all I needed today, thank you! Question: Who has spoken the sentence 13? (A) User (B) System
Output:
Answer: (B) System