You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there at your service?

USER: I am Richard Edwards. Can you please change my reservation as my holiday trip has been postponed?

ASSISTANT: Sure, let me check the status and revert you.

USER: Sure.

ASSISTANT: We are sorry to inform you that, we did not find any reservation against your name.

USER: No issues. Thank you.

ASSISTANT: Thank you for approaching us.