You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Richard Clark.

ASSISTANT: How can I aid you today?

USER: I want to cancel my recent reservation, due to sudden demise of my grand father. Can you please help me?

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: Thank you for waiting, there is no recent reservation found with the given name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you.