You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, may I know your name?

USER: Anthony Garcia here.

ASSISTANT: Please wait a moment.

USER: Ok.

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

USER: Thank you for the help.

ASSISTANT: Thank you.