You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to modify my destination airport code because the place where I have to go is not near to that destination airport. Can you please help me to change the details?

ASSISTANT: May I know your name please?

USER: Ok, my name is Deborah Thompson.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: Ok, not an issue. Anyway's thank you for your information.

ASSISTANT: Thank you for opting us.