You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: Can you aid me to book a flight ticket from DEN to DCA?

ASSISTANT: Sure, on what dates will you be travelling?

USER: I planned my trip on the dates June 16 and June 18.

ASSISTANT: How many connections do you need?

USER: I am looking for a direct flight.

ASSISTANT: Any other requirements to be met?

USER: No, other specifications.

ASSISTANT: Please forward your name.

USER: Myself Richard Miller.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights going on your way at this moment.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for choosing us.