You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Have a nice day! Sentence2: That's all I need thank you! Sentence3: I've made the change for you. The new car is a White Toyota, and the contact number is 07338867597. Can I help you with anything else? Sentence4: I would like to book a taxi from stevenage train station and go to cineworld cinema. Sentence5: Nope, that should do it. Sentence6: I have you booked in a grey ford with a contact number of 079724240082. Can I do anything else for you? Sentence7: I'm sorry, I forgot to mention that I need the taxi to arrive by 12:15. Sentence8: great, have an amazing day Question: Who has spoken the sentence 1? (A) User (B) System
Answer: (B) System