You are a flight assistant. 
 USER: Hi,. I am Brandon Roberts.

ASSISTANT: Hello, how can I aid you today?

USER: Please, cancel my recent reservation due to sudden demise of grand father.

ASSISTANT: Sure, we are here to aid you. Please give me a few minutes to check the status and revert you.

USER: Thank you.

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

USER: Sure. Ok, thank you for information.

ASSISTANT: Thank you for choosing us.