You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to cancel my reservation due to sudden demise of my Great Grandfather, so please help me to cancel.

ASSISTANT: Sure, we are here to help you. Can I have your name to proceed further?

USER: Sure, I am Sharon Parker.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Thank you for your valuable time, sorry, no reservation found with provided name.

USER: No issues, thanks for your effort.

ASSISTANT: Thank you for availing us.