Task: Speaker Identification
Input (English): Sentence1: I will be starting from Tuesday. Sentence2: I'm looking for a cheap guesthouse. Sentence3: No that is all, thank you! Sentence4: All set. Your reference number is ATMXXNQI . Sentence5: Would you like us to book a ticket for you? Sentence6: Before I can book it I need to know what day you will be staying? Sentence7: I have train TR2715 that leaves at 7:39 and arrives at 9:07. Sentence8: I also need a train for Tuesday that leaves London Liverpool Street and arrives in Cambridge by 16:15. Sentence9: Alright, have a lovely day! Sentence10: great, i have 9 options for you. Sentence11: Thanks! You're welcome, have a great day! Sentence12: Great. I need it for 7 for 5 nights. Sentence13: TR1395 arrives at 15:07. Sentence14: No, that's all I needed. Thanks! Sentence15: Would you like me to book anything else or provide anymore info? Sentence16: How about Finches Bed and Breakfast at 144 Thornton Road? Sentence17: I really prefer to stay in the west part of town. Do you happen to have anything in that area? Sentence18: Do you have a train less early? One that arrives around 16:15? Sentence19: great day and thanks for helping Sentence20: Thank you for your help. Question: Who has spoken the sentence 4? (A) User (B) System
Output (English): Answer: (A) User