You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jonathan Green. Can you please change my existing reservation to new locations?

ASSISTANT: Sure, I will check.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, we could not find any reservation in our database with your name.

USER: It's ok, thanks for checking my status.

ASSISTANT: It's my pleasure.