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: The system is unable to provide me with such information is there anything else? Sentence2: I am unable to book this for you. Do you have any other preferences ? Sentence3: The would be great. Can I have the address and phone number? Sentence4: I need the entrance fee and address. Sentence5: I apologize, but it looks like saturday is not working either. Sentence6: It is in the Center of town. What else would you like to know? Sentence7: Would you like me to book it for you? Sentence8: Try tuesday please. Sentence9: Surprisingly, I have three options. How about Citiroomz? It is located in the centre and is moderately priced. Sentence10: The entrance fee is 4 pounds and the address is 1-6 corn exchange street. Anything else? Sentence11: Good Bye thank you for calling Sentence12: No that would be all. Thank You. Goodbye Sentence13: How many people will be staying and when would you like to stay? Sentence14: Hello, can you recommend a 0-star hotel with free WiFi, please? Sentence15: How much will the ride cost? Sentence16: Yes I'd like to book a taxi from the hotel to the nightclub and i need to leave by 22:15.And may i have car type and confirmation # please? Sentence17: I'm sorry tuesday isn't working either. Sentence18: Yes certainly their address is sleeperz hotel, station road and their telephone number is 01223304050. Sentence19: How about tuesday? Sentence20: I suppose I'll book it myself, then. Can you tell me about the Soul Tree Nightclub? What part of town is it in? Sentence21: Yes, please book it and provide a reference number. Sentence22: It will be for 2 people starting on Wednesday. Sentence23: Great I need to book it for 4 nights Sentence24: Okay a red honda will be coming for you. The number is 07945880615 Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System