You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Samantha King.

ASSISTANT: How can I aid you for the day?

USER: Can you help me in booking from IAD to ATL, as there is business meeting to attend at Atlanta?

ASSISTANT: Sure, Samantha King, I will help you with that flight ticket booking. May I know your travelling dates. please?

USER: My trip dates are 08/31 to 09/02.

ASSISTANT: Please hold for a moment.

USER: Sure.

ASSISTANT: Sorry to say, there  are no flight's available on your route as per your travel dates?

USER: No issue, thank you.

ASSISTANT: Thank you very much for contacting us.