You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Due to sudden demise of my grandmother I need to change my reservation, can you please help me with changing?

ASSISTANT: Yes, I am happy to help you in change of flight ticket reservation.

USER: Thank you.

ASSISTANT: Please may I know on which name the flight ticket has been reserved?

USER: Please check the reservation on the name of Janet Roberts.

ASSISTANT: Sure. Wait for a moment please.

USER: Ok.

ASSISTANT: Sorry to say that I have not found your flight reservation to make changes to it.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you.