You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I want to travel from IAD to LAX. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am gleeful to help you with that flight ticket booking. May I know your travelling dates, please?

USER: I want to fly in the flight on July 22 and July 24.

ASSISTANT: Do you have any class preference?

USER: No, but I am looking for a direct flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There is a direct flight-1020 available in Spirit Airlines with a fare of 200. Shall I book it?

USER: Book the ticket for me.

ASSISTANT: May I know your name please?

USER: James Scott.

ASSISTANT: James Scott, your booking is confirmed successfully in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a safe journey.