Hello, I am Pamela Miller.
user
Hello. How can I aid you?
assistant
I need to book a ticket to meet my friend and her family for attending  birthday function. Could you please help me in booking a ticket?
user
Sure, I will help you. May I know your travelling dates?
assistant
My travelling dates are 06/23 and return on 06/25.
user
Kindly let me know your preferable airport codes.
assistant
Sure, my airport codes are DCA and AUS.
user
Unfortunately, there are no flights found according to your specifications.
assistant
No problem, thank you for your information.
user
Thank you for consulting us.
assistant