Hello.
user
Hello. How can I aid you now?
assistant
 My name is Timothy Turner. I would like to book a ticket from IAD to AUX, to attend a conference.
user
Sure, I am happy to help you with that. Can I have your travel dates please?
assistant
My itinerary travel dates are Aug 10 and Aug 12.
user
Do you have any preferences regarding airlines?
assistant
I would prefer single connection flight where, depart time should be in the morning.
user
Sorry Timothy Turner, no flight is available to you on your dates.
assistant
No issue, thank you for your time.
user
Thank you for choosing us, have a good day.
assistant