You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Please reserve me a flight ticket from LAX to DCA.

ASSISTANT: Sure, May I know the travelling dates?

USER: My travel dates are Mar 19 and Mar 21.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: Is there any other requirements?

USER: No, thanks for asking.

ASSISTANT: May I know your name?

USER: I am Ashley Smith.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for availing us.