You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am unable to travel to airport to board my flight due to severe accident in my way to airport. Can you help me in cancellation of my reservation?

ASSISTANT: Sure, I am willing to help you. May I know your name please?

USER: Thank you. I am Barbara Clark.

ASSISTANT: Ok, wait a minute please.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: My pleasure.

ASSISTANT: Sorry to say no reservation found on your name.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us, have a nice day.