You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Make changes in my existing reservation, which I have done previously with my name Elizabeth Evans.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure, get with my status of reservation.

ASSISTANT: Thank you for being patience, There was no reservation found on your name.

USER: It's ok, thanks for your support.

ASSISTANT: Thank you for reaching us.