You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, I am here to help you.

USER: Frank Gonzalez here.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Frank Gonzalez, no reservation has been found on your name in our database.

USER: Ok. Thank you for the help.

ASSISTANT: Thank you for choosing us.