You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, what can I do for you today?

USER: Please cancel my recent reservation owing to an emergency.

ASSISTANT: Sure, I am glad to help you. May I know your name please?

USER: I am Gregory Turner.

ASSISTANT: Thanks for providing your name, please wait.

USER: Ok.

ASSISTANT: Thanks for your precious time, there was no reservation found on your name to cancel.

USER: Thanks.

ASSISTANT: Thank you for contacting us.