You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, can you let me know your name?

USER: Sarah Robinson here.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: Sarah Robinson. I regret to inform that there is no reservation by your name.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.