You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I just want to cancel my recent reservation, due to sudden demise of my Great grand father. Can you please aid me with cancellation?

ASSISTANT: Sure, I will help you. May I know your name?

USER: Thanks for considering my request, please check my reservation on the name of Thomas Miller.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation on your name.

USER: That's Ok, thanks for your service.

ASSISTANT: Thank you.