You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Christine Adams. Please book a flight for me.

ASSISTANT: Sure, Let me know your journey details?

USER: I want to go to Atlanta, GA - ATL from Washington DC - IAD.

ASSISTANT: OK, could you please provide your journey dates?

USER: My departure and  arrival dates will be on Aug 8 and Aug 10.

ASSISTANT: OK, please wait for sometime I will check and get back to you.

USER: OK.

ASSISTANT: Sorry, there is no flights found on your details.

USER: OK, no issue. Thanks for your information.

ASSISTANT: Thank you, have a nice day.