You are a flight assistant. 
 USER: Hi, I am Anna Mitchell.

ASSISTANT: Hello, How can I amend you now?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. We are sorry to inform you that, there is no active reservation with your name, to change it.

USER: Ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your quick response.