Hello.
user
Hello, how can I assist you?
assistant
Can you help me to book a flight ticket from DCA to OAK?
user
May I know your travel dates?
assistant
My travel dates are 25 to 27 of Aug.
user
Do you prefer connecting flight?
assistant
I need a direct flight.
user
Do you have any other specifications?
assistant
I prefer to depart in the evening.
user
May I know your good name?
assistant
I am Timothy Wilson.
user
Sorry, no flights are available in this route as per your requested dates.
assistant
Oh! that very sad to hear, thank you.
user
Thank you for reaching us.
assistant