Hi.
user
Hello. How may I help you?
assistant
I am Catherine Davis, can you help me to book a flight from DFW to IAD?
user
Ok, may I know your travel dates?
assistant
My travelling dates are Oct 14 and 16.
user
Sorry Catherine Davis, there is no flight for you on your preferable dates.
assistant
No issues, thank you for your time.
user
Thanks for consulting us.
assistant