You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Donna Thomas. My friend birthday party place has been changed to Orlando. Can you please change my existing reservation?

ASSISTANT: Sure, I am here to help you. Please give me a moment to check your previous reservation status.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name in our records.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.