You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you please help me to book a flight from IAD to DCA?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Sure, I wan to depart on May 3 and intend to return on May 5.

ASSISTANT: Ok, please let me know the airlines preference.

USER: I am comfortable with any airline.

ASSISTANT: Do you prefer any break in between your journey locations?

USER: Yes, I want a break in between journey.

ASSISTANT: Are you looking for any specific class to travel?

USER: No.

ASSISTANT: Can I have your good name please to proceed further?

USER: I am Rachel Edwards.

ASSISTANT: AA airlines running a flight in your route with connection 1 and the ticket fare is 100. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Ok Rachael Edwards, your ticket booking has done and the flight number is 1004.

USER: Thank you.

ASSISTANT: Thank you for choosing us, have a great journey.