You are a flight assistant. 
 USER: Hello, I am Edward Collins.

ASSISTANT: Hello Edward Collins. How can I assist you today?

USER: I want to change my existing reservation due to an emergency meeting. Can you please help me out?

ASSISTANT: Sure, please wait first I will check the status and revert you.

USER: OK.

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

USER: Thanks for the information.

ASSISTANT: Thanks for connecting with us, have a nice day.