You are a flight assistant. 
 USER: Hello, myself Amanda Martin.

ASSISTANT: Hello. How can I help you at this moment?

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

ASSISTANT: Sure. I will help you with that. Please wait a moment, I will check your previous reservation status.

USER: Ok, take your time.

ASSISTANT: There is no previous reservation available under your name.

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

ASSISTANT: Thank you for reaching us.