You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I have to change my travel airport codes because I have given a airport code which is far to my current location. So, I need your help. Will you please help me in changing the details?

ASSISTANT: Sure, I am here to help you out. Please provide me your name.

USER: Myself Matthew Hernandez.

ASSISTANT: Please allow me a moment to check the reservation status.

USER: Ok.

ASSISTANT: Sorry Matthew Hernandez, there is no reservation on your name in our database.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.