You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

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: Can I know your name?

USER: Stephanie Green here.

ASSISTANT: Ok. I regret there is no reservation by your name.

USER: No issue, Thank you for the information.

ASSISTANT: Thank you.