You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carol Thompson.

ASSISTANT: Ok.

USER: I would like to alter my existing reservation, due to postpone of my interview date. Can you please assist me in changing?

ASSISTANT: Sure, I am here to help you Carol Thompson.

USER: Ok.

ASSISTANT: Sorry Carol Thompson, no active reservation found on your name in our data base.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you.