You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Due to sudden demise of my Great grandfather, I want to cancel my recent reservation. Can you please help me for cancellation?

ASSISTANT: Sure, we are glad to aid you with cancellation. Can you please share your name, to proceed further?

USER: Sure, I am Lisa Gonzalez.

ASSISTANT: Ok, please wait for while.

USER: Ok.

ASSISTANT: Thanks for your time, there was no reservation found on your name to cancel it.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for opting us.