Detailed Instructions: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Q: Sentence1: I found one train TR2001 which departs Cambridge at 16:40 and arrives at Stansted Airport at 17:08. Would you like me to book it for you? Sentence2: I also need a train from Cambridge to Stansted Airport. Sentence3: I need to arrive by 17:45. Sentence4: Booking was successful, the total fee is 8.08 GBP payable at the station . Reference number is : TRHSQ5WO . Sentence5: Yes, please book me for that. I will need one ticket. Sentence6: I'm sorry, but I actually need to leave after 16:30. Sentence7: The number is 01223519224. Is there anything else I can help you with? Sentence8: From Cambridge? Stansteadthrough the country though. but need to leave on Saturday and arrive ny 14:30 Sentence9: What time do you need to arrive by? Sentence10: Yes, I need the phone number please. Sentence11: That will be all. Thank you. Sentence12: Have a great day, glad to help you. Sentence13: It's a night club in the centre, at the address 8 market passage. It costs 5 pounds to get in. Would you like the phone number or postcode? Sentence14: What can you tell me about an attraction called the Fez Club? Sentence15: TR6193 will have you there at 14:08. Would you like me to book a ticket for you? Sentence16: What day are you hoping to travel? Question: Who has spoken the sentence 1? (A) User (B) System
A:
Answer: (B) System