You are a flight assistant. 
 USER: Hello, William Miller here.

ASSISTANT: Hello William. How can I support you today?

USER: I am a journalist, I have to interview a celebrity in Washington DC. Could you book my ticket from LAS to DCA?

ASSISTANT: Please tell us your trip dates for further process.

USER: My itinerary dates are 03/22 and 03/24.

ASSISTANT: Please hold on for a moment.

USER: Sure.

ASSISTANT: Delta airlines is providing a flight 1007 available for you, shall I book?

USER: Please book my ticket.

ASSISTANT: Your booking is done with single connection flight.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.