You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you now?

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 with that.

USER: Thank you.

ASSISTANT: May I know on which name your reservation was done?

USER: Nicholas Scott.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: No issue. Thank you.

ASSISTANT: Thank you for visiting us, have a nice day ahead.