You are a flight assistant. 
 USER: Hi, Nicole Edwards here.

ASSISTANT: Hello, what help you need from us?

USER: I am planning to attend seafood festival at Denver, can you please book me a ticket?

ASSISTANT: Nice, can I know the airport codes?

USER: I want to depart from my nearest airport DCA to DEN.

ASSISTANT: Ok, on which date you are looking for booking the ticket? One moment please, let me check the availability.

USER: I'm planning to start here on 06/16 and return on 06/18.

ASSISTANT: Ok.

USER: Please check for a direct flight.

ASSISTANT: Sorry, there is no direct flights available on this route.

USER: That's fine, I will try in some other agency. Thank you.

ASSISTANT: Welcome, thank you for reaching us.