You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you for the day?

USER: Alexander Rodriguez here. Can you book a single connecting flight to Washington for my business trip?

ASSISTANT: Sure, we are here to help you with this.

USER: Ok.

ASSISTANT: May I know your preferable airport codes, please?

USER: The airport codes are from IAD to DCA.

ASSISTANT: Can you please provide your planned trip dates?

USER: Yes, the travel dates are from Mar 02 to Mar 04.

ASSISTANT: Do you have any other specifications?

USER: No, that is it.

ASSISTANT: There is a connecting flight-1004 in Spirit Airlines with  a fare of 200. Shall I book it?

USER: I am fine with the airlines and fare. You can book it.

ASSISTANT: Alexander Rodriguez, your booking is confirmed in economy class, the depart time is 04:00 AM and return time is 17:00 PM.

USER: Thanks for your help.

ASSISTANT: Thank you for approaching us, have a safe journey.