You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this minute?

USER: I am planning to visit Atlanta, will you help me in booking the flight ticket from DCA to ATL?

ASSISTANT: Ok, I am here to help you with that. Can I know your journey dates?

USER: My travelling dates are June 16 and June 18.

ASSISTANT: May I know your name? Do you have any other requirements?

USER: Myself George Gonzalez. I need a connecting flight which departs in afternoon time.

ASSISTANT: Do you have any other requirements?

USER: no, thank you for asking.

ASSISTANT: Please wait for a minute.

USER: Ok, I will wait.

ASSISTANT: Sorry to inform that, there are no flight's available based on your travelling dates.

USER: Ok, not an issue.

ASSISTANT: Thank you for consulting us.

USER: Thank you for your information.