Hi. I am Samuel Miller.
user
Hello. How may I support you today?
assistant
  I want to make my flight reservation from ORD to DCA. Can you please help me?
user
Sure, we are glad to assist you in booking. Do you have any specific depart and arrival time for this trip?
assistant
I would like to return at morning.
user
 May I know if you prefer to have any other comforts in your journey?
assistant
I need a connecting flight.
user
Can you please share your journey dates that you prefer to travel?
assistant
My travel dates are 05/14 and 05/16.
user
Ok, please wait a moment.
assistant
Ok.
user
Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.
assistant
Oh! Sad to hear that. Anyway, I will find another alternative to go there.
user
Thank you for choosing us.
assistant
Thank you.
user