You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Margaret Lewis. Can you please help me in booking my flight ticket from DCA to IAH?

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

USER: My travelling dates are 08/19 and 08/21.

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

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked with flight 1005.

USER: Thank you.

ASSISTANT: You are welcome.