Hello.
user
Hello. How may I help you?
assistant
Jeffrey Rodriguez here. I want to travel from DCA to DEN, can you help to find a flight ticket?
user
  Ok  Jeffrey Rodriguez, can you please share your trip dates?
assistant
My travel dates are 08/30 and 09/01.
user
Sorry, there is no flight found with your preferences to book a ticket for you.
assistant
It's ok, thank you.
user
Ok, thanks for consulting us.
assistant