You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking a flight ticket from IAD to DTW?

ASSISTANT: Sure, can I know your good name please?

USER: Myself Charles Wright.

ASSISTANT:  When you are willing to travel?

USER: I would like to fly on Apr 17 and return on Apr 19.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a single connection.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I don't have any other preferences.

ASSISTANT: Thank you for waiting and we have found a flight in an economy class with 1 connection in Southwest airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: You can proceed to booking.

ASSISTANT: Your booking is done with flight number 1003.

USER: Thank you.

ASSISTANT: Thank you for choosing us.