You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Please book a flight ticket from IAD to ORD?

ASSISTANT: Sure, I am perky to help you. Can you please share your travel dates that you have planned?

USER: My journey dates are Feb 17 and Feb 19.

ASSISTANT: Do you prefer any lay by in between journey?

USER: I need a connecting flight.

ASSISTANT: May I know your good name please?

USER: I am Nicole Jackson.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I prefer a economy class.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure.

ASSISTANT: Thank you for your time, we have found a Frontier airline, flight number-1003, connections-0 and ticket-100. Would you like me to book the ticket?

USER: Go ahead.

ASSISTANT: Sure, a seat has been reserved successfully for a economy class flight.

USER: Thank you for your help.

ASSISTANT: Thank you for your presence. We hope to serve you again.