Hello.
user
Hello, could you please tell us for what help you approached us?
assistant
I would like to attend for a seminar in SFO. Can you please help me to book a flight from ATL?
user
 Sure, may I know your departure and arrival day?
assistant
I want to depart on May 19 and need to return on May 21.
user
Ok, could I have your name please?
assistant
Elizabeth Davis here.
user
Ok, do you need direct or connecting flight?
assistant
I need a direct flight.
user
Ok, do you have any other specifications?
assistant
My return time must be in the evening.
user
Sorry, there is no flight on your requested travelling dates.
assistant
Ok, no problem. Thank you for checking.
user
You are welcome, have a great day.
assistant