You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, What kind of help are you expecting from our side?

USER: 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 out with that.

USER: Thank you.

ASSISTANT: May I know your good name please to track the details?

USER: Sure, please check the reservation on the name of Brian Robinson.

ASSISTANT: Ok, Please allow me a moment to check for the previous reservation in our data base.

USER: Ok.

ASSISTANT: We are sorry to specify that, there is no active reservation found on your mentioned name.

USER: Ok, Thank you for your help.

ASSISTANT: Thanks for choosing us, have a great day.