You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Due to sudden demise of my Grandfather, I want to cancel my recent reservation. Can you please cancel my reservation?

ASSISTANT: Sure, kindly mention your name to cancel it.

USER: Sure, I am Mary Allen.

ASSISTANT: Ok, please wait.

USER: Ok.

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

USER: Ok, Thanks for providing information.

ASSISTANT: Thank you for choosing us.