Hello,.
user
Hello, how may I assist you?
assistant
I am Debra Lopez. I want to attend my sister marriage in Seattle, so please help me for booking a flight ticket.
user
Sure, I am here for that. Could you please send me your details?
assistant
My source and destination airport codes are DC-IAD, WA-SEA.
user
OK, May I know your journey dates please?
assistant
My departure day is 11/02, return day is 11/04.
user
OK, Could you please wait for a minute?
assistant
OK sure.
user
I will check the availability and come back to you. I have found a flight for you,  which matches all your requirements.
assistant
Can you please provide me the flight details?
user
Sure. The details are: Spirit airlines, flight number-1007, having price of 100. Shall I proceed for the reservation?
assistant
Yes please.
user
Your ticket has been confirmed.
assistant
Thank you for your service.
user
Thank you for reaching us. Have a Great day.
assistant