You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I am planning to visit the Reading terminal market which is located in the Philadelphia, PHL. Can you avail me to book a flight ticket?

ASSISTANT: Sure, could you please provide your take off airport code?

USER: I want to take off from Washington, IAD.

ASSISTANT: May I know your good name?

USER: Larry Lewis here.

ASSISTANT: Could I have your trip dates, please?

USER: My trip dates are July 19 and 21.

ASSISTANT: Please let me know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: We found a direct flight 1008 from Southwest airline has fare 100. Shall I proceed?

USER: Please reserve my seat in Southwest airlines.

ASSISTANT: Your booking has been processed.

USER: Thanks for your kind service.

ASSISTANT: Thank you for availing us.