You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Please book a ticket from DFW to DEN.

ASSISTANT: Sure, can you please provide me with your dates of journey?

USER: Travelling dates are Aug 10 and Aug 12.

ASSISTANT: Please wait for a mean while.

USER: Ok.

ASSISTANT: There is a direct flight of fare 100 and the airline is Southwest, shall I book this ticket?

USER: Please book a ticket.

ASSISTANT: May I know your name please?

USER: I am Robert Wright.

ASSISTANT: Ok Robert, your ticket has been confirmed with the flight number 1006.

USER: Thanks.

ASSISTANT: You are welcome, have a safe journey.