You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Richard Green.

ASSISTANT: Green, how can I aid you today?

USER: Would it be possible to change my reservation to new locations?

ASSISTANT: Yes, it is possible to change your locations.

USER: Thanks for your immediate response.

ASSISTANT: Sorry Green, there are no flights reserved on your given name formerly.

USER: It's ok, thanks for your information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.