You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I want to change my existing reservation, can you please help me with this?

ASSISTANT: Ok, please can I know your name to check for the status of your reservation?

USER: I am Daniel Baker.

ASSISTANT: Ok, please wait a moment I will check.

USER: Sure.

ASSISTANT: Sorry Daniel Baker as your reservation status is inactive I can not amend it.

USER: Ok, no problem.

ASSISTANT: Ok, thank you for choosing our agency.

USER: Thank you for your information.