Hi,.
user
Hello, how can I serve you today?
assistant
I planned baby shower program with my family at Washington DC-DCA on 12/02.
user
May I know your origin and return day?
assistant
 I should return on 12/04 from PHL.
user
Please wait for a minute, I will check the availability of flights and let you know.
assistant
Sure.
user
Thank you for waiting, sorry to inform you that unfortunately there is no flights available on the given days.
assistant
Ok, thank you.
user
Thank you for availing with us.
assistant