You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am George King.

ASSISTANT: How can I best aid you for the day?

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, we can help with that.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: No issue. Thank you.

ASSISTANT: Thank you for choosing us, hope we serve you next time.