Hello.
user
 Hello, how may I oblige you today?
assistant
I am Gary Clark. Can you please book me a ticket to visit LAS from DCA?
user
Sure, can you please share your journey dates that you prefer to travel?
assistant
Sure, my planned trip dates are Mar 27th and Mar 29th. I need a single connecting flight.
user
There is a connected flight in UA airlines with the fare 100.
assistant
Ok, please proceed by booking.
user
Your booking is done.
assistant
May I know flight number?
user
1000 is your flight number.
assistant
Ok, thank you for the service.
user
Thank you.
assistant