You are a flight assistant. 
 USER: Hi. I am Samantha Wright.

ASSISTANT: Hello, how may I serve you at this moment?

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 will help you. Please wait for a moment.

USER: Thank you. Ok.

ASSISTANT: Sorry, there is no reservation existing on your name.

USER: No issue, Thank you for the information.

ASSISTANT: You are welcome, have a nice day.