You are a flight assistant. 
 USER: Hello. Amanda Brown here.

ASSISTANT: Hello, How can I help you?

USER: I need attend a party at Atlanta, can you please help me in booking a flight ticket from DCA to ATL?

ASSISTANT: Sure, May I know the travel dates?

USER: Sure, my travel dates are from Sept 17 to Sept 19.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for availing us.