Hello.
user
Hello, how may I assist you?
assistant
I am Jessica Davis. I am planning to attend a meeting, so I want to book a ticket from DEN to DCA. Can you help me to book a ticket?
user
What date will you be traveling?
assistant
My departure date  is 09/12 and return date is 09/14. Make sure my connection limit is 1.
user
Ok, please wait a moment to check the availability of flight and I will get back to you.
assistant
Sure, take your own time.
user
I am happy you to inform you that we have Frontier airlines. It goes with one connecting flight. Shall I book it?
assistant
You can proceed the booking.
user
Sure. Your flight ticket with Frontier airlines is confirmed. Have a nice journey.
assistant
Thank you for your service.
user