You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Dorothy Parker.

ASSISTANT: In which way I can help you today?

USER: Can you please book a flight ticket from IAD to EWR?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: May I know your travel dates for booking flight ticket?

USER: Sure, I need to travel on dates of 12/21 and 12/23.

ASSISTANT: Ok, just hold on a moment, I will check flight availability.

USER: Sure, take your time. I want a 1 connection limit flight.

ASSISTANT: Sure. Sorry no flights available in this route with 1 connection limit.

USER: It's ok no problem. Thank you for your information.

ASSISTANT: You are welcome.