You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I was suffering from fever and would like to cancel my trip. Can you help me in cancelling my ticket?

ASSISTANT: Sure, may I know your name for cancelling ticket.

USER: My name is Amanda Walker.

ASSISTANT: Walker, your ticket is canceled. Thank you for choosing us.

USER: Thank you.