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: Ok, please can I know your name to check for the reservation and change it?

USER: Rebecca Perez here.

ASSISTANT: Ok, thank you for providing your name. Can you wait a moment?

USER: My pleasure. Sure, I will wait.

ASSISTANT: Ok, thank you for waiting. Sorry, there is no reservation been found on your name to change it.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing our agency.