Hello.
user
Hello, how may I help you?
assistant
I am Frank Walker. I would like to travel from Fort Worth-DFW to Washington-DCA to meet my grandparents, can you help me in booking?
user
Ok, please tell me your departure and arrival day.
assistant
I am departing on 12/20 and return on 12/22.
user
Sorry, there is no flight on your requested travel dates.
assistant
That's ok, thank you for your help.
user
Thank you.
assistant