You will be given a definition of a task first, then some input of the task.
You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Sentence1: Booking completed! Booked car type : blue honda Contact number : 07229655312 Sentence2: I can help with that? What are your departure and destination sites, and what time do you need it? Sentence3: I need to book a taxi. Sentence4: I need to leave from ely and get to sidney sussex college by 14:15. Sentence5: Thanks so much! That'll be it for me for today. Sentence6: Thank you for using the Cambridge TownInfo centre. We're here 24/7 if you need help with anything else. Have a great day. Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System