You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am looking to change the destination airport code in the previous ticket, can you please help me to change the details?

ASSISTANT: Sure, I am here to help you out. May I know your name please to proceed further?

USER: Thank you. My name is Barbara Carter.

ASSISTANT: Wait a moment please.

USER: Ok, take your time.

ASSISTANT: We regret to inform you that there is no reservation found on your name in our records.

USER: Thank you for checking my ticket status.

ASSISTANT: Thank you for approaching us.

USER: You are welcome.