You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: OK, the TR4117 arrives at 12:52. Would you like to book that train? Sentence2: No. That is all. Thanks. Sentence3: Thanks for using the help desk! Sentence4: The allenbell is a guesthouse located in the east. It is a cheap 4 star hotel with free parking and internet. Sentence5: Thanks so much, Can you book it for 1 person for 4 nights starting from the same day? Sentence6: TR4117 is 10.10 pounds per ticket and the duration of the trip is 28 minutes. You would leave at 12:24 and arrive in Cambridge at 12:52. Sentence7: I'm looking for a train leaving stansted airport on tuesday. Sentence8: I have made your reservation for Tuesday, with reference #OV9QI79D . Can I help you with anything else? Sentence9: Thank you! I'm also looking for a hotel named the Allenbell. Can you help me with that? Sentence10: I am going to Cambridge and i plan to depart from stansted airport and i need a train schedule from stansted airport that will get to Cambridge by 13:30 Tuesday. Sentence11: Not yet but I do need a price and travel time. Sentence12: What is your destination and what time would you like to depart from stansted airport? Question: Who has spoken the sentence 9? (A) User (B) System
Output:
Answer: (B) System