You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have made a ticket reservation in the last week but I have given the wrong airport code. Can you please aid me to change that?

ASSISTANT: May I know your name please?

USER: Thank you. My name is Ronald Edwards.

ASSISTANT: Sorry to say, we have not found any reservation on your name in our database.

USER: Oh! It is so sad to hear. Anyhow thanks a lot for checking my ticket status.

ASSISTANT: Thank you for opting us.