You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I want to book a ticket from DFW to IAD, can you assist me?

ASSISTANT: Sure, I will assist you i booking your flight ticket. Can you please provide your planned dates of journey?

USER: My preferred dates are Jan 27th and Jan 29th.

ASSISTANT: Would you like to have a direct flight or a connecting flight for your journey?

USER: I need to travel in a connecting flight.

ASSISTANT: Can you please provide your name for booking purpose?

USER: Andrew Carter.

ASSISTANT: Is there any other requirement for your journey to met with?

USER: No, you can proceed booking.

ASSISTANT: Andrew Carter, there is a flight by United Airlines having a ticket fare of 200 which departures in the evening. Would you like me to book this flight for your journey?

USER: Proceed.

ASSISTANT: I have booked your flight ticket with the flight 1003 in an economy class.

USER: Thank you for booking.

ASSISTANT: You are welcome, thank you for opting our service. Have a safe journey.