You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Sharon Mitchell.

ASSISTANT: How may I assist you today?

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 are glad to assist you in booking.

USER: Thank you.

ASSISTANT: Please wait a moment I'll check the reservation list.

USER: Ok.

ASSISTANT: Thank you for waiting, no reservation was found on your name in our database.

USER: No issue. Thank you.

ASSISTANT: Thank you for approaching us.