You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Nancy Martinez, suddenly I got a program to attend for that so I want to visit Washington. Can you please help me in booking the ticket from DCA to IAD?

ASSISTANT: Certainly, could you please share your departure and arrival dates?

USER: I am willing to travel on 02/26 and again I will be return back on 02/28.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: There is a connecting flight 1000 with price 100, do you fine with that?

USER: Yes, I think that can work for me.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you very much for booking the ticket.

ASSISTANT: Thank you for choosing us, have a nice day.