Hello.
user
Hello. How can I aid you?
assistant
I am Paul Green. I would like to meet my father on his birthday, can you please help me to book my flight ticket from IAD to LAX?
user
Sure, May I know your travelling dates?
assistant
Sure, I would like to depart on Sept 23 and I will return back on Sept 25.
user
Do you have any preferences?
assistant
Yes, I prefer for a business class.
user
Thanks for your details.
assistant
Please check for the single connection flight.
user
There are no flights found under business class.
assistant
Sad to hear that. Anyway, thank you for checking.
user
Thank you.
assistant