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: What is your price range? Sentence2: book for 5 people and get me the reference number Sentence3: Could you try the moderate price range to see if there are any available? Sentence4: I need to find a place to stay that has 4 stars and has free wifi Sentence5: Great. Are you looking for a train, hotel or attractions to visit while in Cambridge? Sentence6: Congratulations, you are all booked! The total fee is 189 GBP payable at the station.Your reference number is : RR4BSBW5 . Is there anything else I can do? Sentence7: Sorry there is no guesthouse fitting the description you asked for Sentence8: It should be expensive and a guesthouse. Sentence9: You're welcome. Is there anything else I can do for you? Sentence10: I am planning a trip in Cambridge. Sentence11: No thank you, I appreciate your help today. Sentence12: Yes there are 11. I recommend the Acorn Guest House. Would you like a reservation? Sentence13: I need a train that leaves Cambridge on Wednesday to arrive in Leicester by 12:15 please. Sentence14: Sure, for 5 people for four nights starting Wednesday. Sentence15: the TR9366 train arrives at 12:06. Sentence16: Thank you for your help. Sentence17: Okay I have booked that and your reference number is HUH8HH95 . Sentence18: Your welcome, have a great day! Question: Who has spoken the sentence 10? (A) User (B) System
Output:
Answer: (A) User