You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: David Jones here. I want to cancel my reservation due to family problems.

ASSISTANT: Sure. we are here to help you. Wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thanks for choosing us.