You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of services are you excepting from us?

USER: I have made a reservation to attend for a get together party, but due to some issues the party got postponed to some other dates. Can you please help me to change my reservation?

ASSISTANT: Sure, we are glad to help you to change it.

USER: Thank you for accepting my request.

ASSISTANT: Can I have your name, to check with your previous reservation?

USER: You can check the reservation on the name of Anthony Brown.

ASSISTANT: Thanks for providing your name. Please wait for a moment, I will check the status of your reservation in our database and get back to you.

USER: Sure, take your own time.

ASSISTANT: Sorry to inform you that, we did not find any reservation on your name to change it.

USER: Not an issue, thank you for informing me.

ASSISTANT: Thank you for approaching us.