You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, May I know your name?

USER: Richard Jackson here.

ASSISTANT: Please wait a moment.

USER: Okay.

ASSISTANT: Sorry, No reservation found on your name.

USER: Thank you.

ASSISTANT: Thank you for availing us.