You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you at this minute?

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

ASSISTANT: Sure, I am here to help you with that. Can you send me your travelling dates?

USER: Thank you. I have planned my travel dates as May 22 and May 24.

ASSISTANT: Ok, do you have any other requirements?

USER: I am looking for single connecting flight.

ASSISTANT: May I know your good name?

USER: Sure, myself Karen Clark.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, take your time.

ASSISTANT: The Spirit airlines are providing a flight having a connection limit 0. Can I proceed with the ticket booking?

USER: That is fine, please proceed with booking.

ASSISTANT: Your flight ticket is confirmed in an economy class and the flight number 1011.

USER: Thank you for  your help.

ASSISTANT: Thank you for reaching us. Have a safe journey.

USER: Most welcome.