Hello,.
user
Hello, how can I help you today?
assistant
I want to book a flight ticket to attend my father's retirement ceremony. Help me with the reservation.
user
Sure, I am happy to  help you for that. Can I know your name please?
assistant
The retirement ceremony is at Washington DC - IAD and I want to start from Dallas, TX- DFT. I am Joshua Thomas.
user
OK, may I know the travelling dates please?
assistant
Sure my Depart date is 19th Oct and Return date is 21st Oct.
user
Thank you, do you have any other specifications?
assistant
I need a connection between my journey with a price limit 1000.
user
OK, can you please wait for a while , I will check with the availability and get back to you.
assistant
OK, sure.
user
Thanks for waiting. We are sorry to say you that, we have not found any flights as of your given details.
assistant
OK, thank you.
user
Thank you, have a great day ahead.
assistant