You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

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, could I have your name please?

USER: Eric Jackson here.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation with your name in our portal to make changes.

USER: No worries, thank you for the information.

ASSISTANT: You are welcome.