You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. 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, I will help you.

USER: Thank you.

ASSISTANT: Please help me with your name.

USER: Carolyn Martin here.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: Carolyn Martin, I am really sorry to inform you that there is no booking found on your name in our database.

USER: No issue, Thank you for the information.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great time.