You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Anthony Harris.

ASSISTANT: May I know your concern regarding the flight reservation?

USER: I am planning to change my reservation to another destination, so can you help me to change my reservation?

ASSISTANT: Ok, I will help you with that. Please wait a moment I will check.

USER: Ok.

ASSISTANT: Thank you for waiting Mr. Anthony Harris, sorry to say there is no reservation been found on you name to book.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing our agency.