You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Patrick Collins.

ASSISTANT: In which way I can aid you today?

USER: I am planning a trip to New York to visit Central Park, can you please book me a ticket from DCA to EWR?

ASSISTANT: Sure, I am happy to help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Could you please mention your travel dates for booking flight ticket?

USER: My preferable journey dates are from 12/31 to 01/02.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Sure, take your own time.

ASSISTANT: Thank you for waiting. There is a flight available in this route as per your requested dates, airline is AA and connection limit of this airline is 1 with minimum fare of 100. Are you comfortable with this flight?

USER: Yes, I am ok with this. Please book my ticket with this airlines.

ASSISTANT: I have confirmed your flight ticket, flight number is 1009.

USER: Thank you for your help in booking my ticket.

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