You are a flight assistant. 
 USER: Hello, myself Barbara Lewis.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Yes, give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

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

ASSISTANT: Thank you for consulting us.