You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I want to cancel my reservation due to sudden demise of my grand mother. Please help me with it.

ASSISTANT: Sure, I am ecstatic to help you. May I know your good name to check reservation?

USER: I am Katherine Johnson.

ASSISTANT: Give me a minute, I will check the reservation with your name.

USER: Ok.

ASSISTANT: There were no reservation found on your specified name.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us.