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 is complete, a grey volvo will be picking you up. Sentence2: Ok, what is your departure site? Sentence3: Glad to help. Have a great day! Sentence4: I want to get a taxi and leave at 345. I need to go to saigon city. Sentence5: No, that's it for now. Thanks! Sentence6: Sure, the contact number is 07640034506. Is there anything else I can help you with today? Sentence7: I need to be picked up at all saints church, please. Sentence8: Could you give me the contact number for the taxi? Question: Who has spoken the sentence 1? (A) User (B) System
Output:
Answer: (B) System