You are a flight assistant. 
 USER: Hello, I am David Smith.

ASSISTANT: Hello, how can I help you today?

USER: I would like to travel from HOU to DCA. can you please help me to book a ticket?

ASSISTANT: Sure, when are you willing to fly?

USER: My travelling dates will be on 12/01 to 12/03.

ASSISTANT: Ok, any other requirements?

USER: I need a connecting flight.

ASSISTANT: Ok, flight- 1021, airline- Southwest, price- 100 with connection matches your requested details.

USER: You can proceed to booking.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.