You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am Betty Smith, I need to book a flight ticket from HOU to DCA. Can you find a flight ticket for me?

ASSISTANT: Sure, May I know the travel dates?

USER: Ok, my planned trip dates are on Sept 05 and return on Sept 07.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We have found a direct flight from Southwest airline.

USER: Ok, you can proceed with the booking.

ASSISTANT: Your ticket has been booked with the flight number 1028.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.