You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I oblige you today?

USER: Will you please cancel my ticket? Due to sudden demise of my grandmother I need to cancel.

ASSISTANT: Sure, may I know your good name please?

USER: I am Cynthia Adams.

ASSISTANT: Thank you for providing all necessary details, wait for a while, I will check and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok, Thank you.

ASSISTANT: Sorry to inform you there is no reservation found with your name.

USER: Thanks for the information.

ASSISTANT: Thank you for reaching us, have a great day.