You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Do you have any direct flight from IAD to DCA?

ASSISTANT: May I know your travelling dates please?

USER: My trip dates are 03/13 and 03/15.

ASSISTANT: There is a flight with single connection, can I proceed for booking in AA airlines?

USER: No, I need direct flight.

ASSISTANT: I am sorry no direct flights found on your route.

USER: That's fine, anyways thanks for your information.

ASSISTANT: May I know your name please.

USER: Rachel Carter here.

ASSISTANT: Thank you for choosing us.