Hello,.
user
Hello. How can I aid you?
assistant
I am looking for a flight from DCA to OAK, can you help me out?
user
Sure, may I know the planned travel dates?
assistant
My trip dates are from Apr 20th till Apr 22nd.
user
Please provide me the name.
assistant
I am Gregory Lopez.
user
Sorry, there are no flights are available for your desired dates.
assistant
That's ok, not an issue. Thank you for your help.
user
Thank you for reaching us.
assistant