You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Can you please reserve me a flight ticket from IAD to DCA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my travel dates are from June 05 to June 07.

ASSISTANT: Is there any connection limit?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in the afternoon flight.

ASSISTANT: May I know your name?

USER: Myself Rebecca Harris.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for contacting us.