Hi.
user
Hello. How may I assist you?
assistant
Can you please help me out by booking a ticket from SFO? My destination code is DCA.
user
Sure, may I know your name please?
assistant
Frank Johnson here.
user
Please mention your trip dates?
assistant
My travelling dates are  02/03 and 02/05.
user
Ok, please wait.
assistant
Ok.
user
Thank you for your patience, there are no flights had been found on your details.
assistant
Ok, can you please tell me flight details?
user
There are no flights had been available.
assistant
Ok, fine.
user
Thank you for choosing us.
assistant
Thank you for your information.
user