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

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, please be on hold.

USER: Ok, take your time.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to make changes further.

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

ASSISTANT: Thank you for opting us.