You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you the best today?

USER: Please cancel my reservation which is reserved earlier on my name, due to sudden demise of my grand father?

ASSISTANT: Ok, I can help you with that.

USER: Thank you.

ASSISTANT: Please let me know your name to check your reservation?

USER: Sure, Susan Lewis is my name.

ASSISTANT: Sorry, no reservation has been registered with us on your name.

USER:  Ok, Not a problem. Thanks for your instant help.

ASSISTANT: Thanks for approaching us, have a nice day.