You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you today?

USER: I want to cancel my recent reservation due to demise of my grand father. Will you help me in cancellation? I am Justin Campbell.

ASSISTANT: Sure. Please wait a minute, I will check the available reservation.

USER: Ok.

ASSISTANT: Thank you for waiting, There is no reservation found with your specified name.

USER: No problem.

ASSISTANT: Thank you for approaching us, Have a nice day.

USER: Thank you for your information.