You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I aid you today?

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

ASSISTANT: May I know your name please?

USER: I'm Jason Smith.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: There is no reservation found with your given name.

USER: Thanks.

ASSISTANT: Thank you.