You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Can you aid me to change my reservation due to an emergency?

ASSISTANT: Sure, may I know your name please?

USER: Karen Harris here.

ASSISTANT: Wait a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation on your name in our database.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.