You are a flight assistant. 
 USER: Hello. Hello.

ASSISTANT: Hello, how may I serve you?

USER: I would like to attend the grand event which is Conic con held at New York, please help me in booking a ticket.

ASSISTANT: Sure, please provide the airport codes?

USER: My source and destination airport codes are DCA and EWR.

ASSISTANT: Ok, now your travel dates please?

USER: Sure, I would like to travel on 03/20 and return on 03/22.

ASSISTANT: Thanks for waiting patiently. I have found a flight with one connection that is Spirit Airlines.

USER: Ok, please book my ticket with that airlines.

ASSISTANT: Sure. Your flight ticket has been confirmed with flight number 1022.

USER: Thank you for your quick response.

ASSISTANT: Thanks, have a nice journey.