You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Due to a sudden meeting at office with my client on my boarding day, I want to cancel my recent reservation. Can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is William Williams.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: Your ticket has been cancelled successfully, we will refund your amount to your wallet in a 2 to 3 working days.

USER: Ok, thank you.

ASSISTANT: Thank you for availing us.