Hello.
user
Hello. How may I aid you?
assistant
I am planning to book a ticket to attend a meeting at ORD. Can you please help  me out from LGA?
user
May I know on what dates would you like to travel?
assistant
I would like to travel on Sept 21 and return back on Sept 23.
user
Do you prefer any specifications?
assistant
Yes, my depart time should be afternoon.
user
May I know your name?
assistant
My name is Elizabeth Parker.
user
Sorry to inform you that unfortunately there is no flights available by the given details.
assistant
That's fine, thank you for your help.
user
Thank you.
assistant