You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Due to sudden demise of my Great grandfather, I want to cancel my recent reservation. Can you please help me with this?

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

USER: Sure, I am Helen Roberts.

ASSISTANT: Please wait for a few minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found on your name to cancel.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for choosing us.