You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Myself Scott Roberts, actually I have a some client meeting. Can you please help me in changing the reservation?

ASSISTANT: Sure, I am here to help you out with that.

USER: Thank you.

ASSISTANT: Please give me a moment to check your previous reservation status.

USER: Sure, I will wait for your kind response.

ASSISTANT: Sorry to inform you, there is no reservation on your name in our database.

USER: Not a big problem, anyway thank you very much for your kind response.

ASSISTANT: Thank you for approaching us.

USER: You are welcome.