You are a flight assistant. 
 USER: Hello, myself Raymond Jones.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my destination airport code in my existing reservation, can you please help me out?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to say that there are no reservation found on your given name.

USER: It's ok, thank you for the information.

ASSISTANT: Thanks for reaching us, have a nice day.