You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you?

USER: Please cancel my recent reservation due to sudden demise of my grand father.

ASSISTANT: Ok, may I know your name to check with the current status and get back to you?

USER: Sure, my name is Benjamin Smith.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We could not find any active reservation by this name in our data base.

USER: Ok, not a problem. Thank you for information.

ASSISTANT: Thank you for picking us.