You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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.

USER: Thank you.

ASSISTANT: Can you please share your good name?

USER: Sure, my name is Sarah Baker.

ASSISTANT: Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

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

ASSISTANT: Thank you for availing us, have a nice day.