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: I have 2 guesthouses matching your criteria. The Finches Bed and Breakfast guesthouse is 4 stars and includes free parking and internet. Would you be interested in this? Sentence2: I am looking for a guesthouse with 0 stars. Sentence3: I'm looking for a guesthouse style place to stay. It needs to have free parking. Sentence4: I'm sorry, I can't find a guesthouse that meets those specifications. Is there anything else I can help you with? Sentence5: I would like to stay in the West Sentence6: I am looking for some places to go in the east of multiple sports. Can you help? Sentence7: Yes, the city centre north b and b is a zero star guest house in the north, with free parking and free wifi. Would you like it booked? Sentence8: The Cherry Hinton Village Centre sounds like exactly what you're looking for. Their phone number is 01223576412. Sentence9: Is there one in the north? Sentence10: There are many guesthouses that meet this criteria. Is there a specific area you would like to stay in? Sentence11: When would you like to leave/arrive by? Sentence12: Not yet. Can I get the phone number for the hotel first? Sentence13: Could you tell me what price range that hotel is in? Sentence14: You're welcome! Have a great day! Sentence15: Yes, the number is 01223312843 Sentence16: Certainly! I have booked you with a red skoda, whose contact number is 07790176286. Is there anything else I can help you with? Sentence17: I need a taxi to commute between the two. Can you help? Sentence18: city centre north b and b is priced as a cheap hotel. Sentence19: I will be needing to leave the hotel by 16:45. Can you arrange that? Sentence20: Okay great. That was all I needed. Question: Who has spoken the sentence 9? (A) User (B) System
Output:
Answer: (B) System