Teacher:You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
Teacher: Now, understand the problem? Solve this instance: Sentence1: There are many trains, beginning at 05:19, do you have a time preference? Sentence2: Thank you and goodbye. Sentence3: No thanks that is all I need. Thanks for the assistance. Sentence4: thanks too for choosing us Sentence5: No, thank you. I just need the train ID and price of the ticket. Sentence6: Glad I could help hope you have a great day. Sentence7: I would like to leave after 18:15 please. Sentence8: Train TR6662 leaves at 18:19 and the price is 13.20 pounds. Is there anything else I can do for you today? Sentence9: I need a train to peterborough from cambridge on sunday. Sentence10: Is there a time you need to arrive by? Question: Who has spoken the sentence 5? (A) User (B) System
Student:
Answer: (B) System