Hello.
user
Hello, how can I help you?
assistant
I am Angela Green. Can you book a flight ticket from PHL to OAK?
user
May I know your desired travel dates please?
assistant
I will start on July, 28 and return back on July, 30.
user
Sorry to say, there is no flight on your desired travel dates.
assistant
That's ok, no problem. Thank you.
user
Thank you for opting us.
assistant