You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to change my reservation to another destination, so can you help me to change my reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Kathleen Johnson.

ASSISTANT: Sorry, there is no reservation found on your name in our database to change.

USER: That's ok, thank you.

ASSISTANT: You are welcome.