You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Timothy Roberts here, I would like to attend my sports events in IAD, so can you help me booking flight on 08/10?

ASSISTANT: Sure, may I know your return date and source code?

USER: I would like to return my source airport ATL on 08/12.

ASSISTANT: There is a flight-1004 of Southwest airline is available for you. Shall I proceed?

USER: Ok, proceed to booking that flight.

ASSISTANT: Your ticket has been booked, have a happy journey.

USER: Thank you for confirming my flight ticket.

ASSISTANT: Welcome.