You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I oblige you today?

USER: I am planning to change my destination airport codes in my existing reservation, can you please help me out?

ASSISTANT: Sure, may I know your good name?

USER: Sure, my name is Rebecca Gonzalez.

ASSISTANT: Sure, please hold a moment.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting, there is no active reservation found on the given name.

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

ASSISTANT: Thank you.