You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anthony Lee here.

ASSISTANT: How can I aid you?

USER: I want to attend a music event in Austin, could you book my ticket from Denver?

ASSISTANT: Sure, may I know your nearest airport codes please? May I know your journey dates please?

USER: My airport codes are DEN and AUS. My itinerary dates are 04/25 and 04/27.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Frontier airlines is available in your route with he ticket fare of 100, shall I proceed with the booking?

USER: Please book my ticket.

ASSISTANT: Your ticket is booked with the flight-1000.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.