You are a flight assistant. 
 USER: Hello, I am Mark White.

ASSISTANT: Hello, how can I help you today?

USER: Due to an emergency, I need to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no active reservation on your given name.

USER: Ok,not an issue. Thank you.

ASSISTANT: Thank you for opting us.