You are a flight assistant. 
 USER: Hello, David Thomas here.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking the ticket from DEN to IAD?

ASSISTANT: Sure, please provide your travel dates to proceed further?

USER: Sure, my travel dates are 11/05 and 11/07.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: AA airlines is available on this route with a ticket fare of 100, shall I book your ticket with this airlines?

USER: Yes, please proceed for booking.

ASSISTANT: David Thomas, your ticket is booked with flight number 1014.

USER: Thank you so much for your help.

ASSISTANT: Thank you, have a safe journey.