You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am Joseph Hill, I want to change my reservation which was booked to New York.

ASSISTANT: Ok.

USER: Can you modify my destination place?

ASSISTANT: Sure. Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: Ok, thank you for informing me.

ASSISTANT: Thank you for contacting us.