You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: I am Jason Hernandez.

ASSISTANT: Please wait a moment, I will check the reservation data list and I will inform you.

USER: Ok.

ASSISTANT: Sorry Jason Hernandez, there is no active reservation on your name.

USER: Thank you.

ASSISTANT: Thank you.