You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Thomas Nelson here. I would like to book a ticket to Denver on the occasion of my friends marriage ceremony.

ASSISTANT: Sure, we are here to help you. Kindly assign me your airport codes?

USER: My genesis and the terminus airport codes are IAD and DEN.

ASSISTANT: May I know your trip dates?

USER: My itinerary dates are Aug 13 and Aug 15.

ASSISTANT: Do you have any class preference?

USER: I would prefer single connection and the price limit of 200.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thanks for waiting, We found a direct flight with 1024 flight number. Shall I proceed to book a flight under price of 100 in economy class?

USER: Please proceed.

ASSISTANT: Your seat has been reserved in Spirit airline.

USER: Thank you very much.

ASSISTANT: Thank you for choosing us, have a great trip.