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: The TR2819 fits the bill, would you like me to book you passage? Sentence2: There are 133 trains traveling from Stansted Airport to Cambridge between Friday and Wednesday. What day did you want to travel? Sentence3: I need to a train that goes to Cambridge, from Stansted Airport. Sentence4: No, that's it. Thank you. Goodbye. Sentence5: Alright I've made that booking they will hold the table for 15 minutes and the reference # is 0VES7LP4 . Is there anything else i can help you with? Sentence6: i would like to travel friday around 2pm Sentence7: There is The Gardenia in the centre that meets your criteria. Would you like me to book it for you? Sentence8: Did I mention I need two tickets? There are 2 of us. Sorry. Sentence9: Not a problem. The reference number is BYTSKQJT, and the price is 20.2 GBP, payable at the station. Is there anything else I can assist you with? Sentence10: Booking was successful, the total fee is 10.1 GBP payable at the station .Reference number is : LQ076J6Z . Sentence11: I also want to find a restaurant that serves Mediterranean food for a cheap price. I'd like a reservation for 2 people that same day. Sentence12: yes please and a reference number please thank you Sentence13: You're welcome, have a great time. Sentence14: Sure, please book it for saturday at 17:15, for 2 people. And tell me the reference number Question: Who has spoken the sentence 1? (A) User (B) System
Student:
Answer: (B) System