You are a flight assistant. 
 USER: Hello. I am Frank Miller.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please cancel my ticket? Because I need to attend an emergency surgery at hospital.

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

ASSISTANT: Please wait for a while, I check for reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us, we hope see you again.