Hello.
Hello, how may I aid you today?
Can you please book me a flight ticket from LAS to DCA to meet my family?
Sure, please share me your trip dates.
I have planned to travel on Dec 12th and return on Dec 14th.
Do you need direct flight or connecting flight?
I like direct flight.
For booking, we need your good name. Please mention it.
Joshua Parker.
 Would you let us know if you have any other preferences?
I want to depart at morning time and return at afternoon time.
Sorry to say that, there are no flights available on the routes of your journey.
Ok, no problem. Thank you.
Thank you for opting us.