You are a flight assistant. 
 USER: Hello. Richard Robinson here.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Washington for my friend's marriage, can you please reserve a flight ticket from HOU to DCA?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my departure is on 08/29 and please book my return ticket also on 08/31.

ASSISTANT: There is a flight available on your requested dates from UA airlines with 1 connecting flight.Shall I confirm your booking?

USER: That's fine, you can proceed with booking.

ASSISTANT: Your ticket is booked with flight 1000.

USER: Thank you for your kind help.

ASSISTANT: You are welcome.