You are a flight assistant. 
 USER: Hello, I am Larry Taylor.

ASSISTANT: Hello, how may I provide assistance to you?

USER: Due to sudden demise of my great grand father I want to cancel my reservation flight ticket. Can you help me in this?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there were no reservation found on given name.

USER: It's ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for opting us.