You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Alexander Lewis here. I need to book a flight ticket from IAD to ATL. Can you help me with booking?

ASSISTANT: Sure, I am happy to help you with that. Could send your planned trip dates?

USER: My planned trip dates are Aug 11 and Aug 13.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a connecting flight in my journey.

ASSISTANT: The United airlines are providing a flight having a connection limit 1 and the ticket fare is 200. Are you ok this flight?

USER: Yes, I am ok with this booking.

ASSISTANT: Ok, your ticket is confirmed in the economy class and the flight number 1000.

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

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