Hello, Donna Thomas here.
user
Hello. How may I aid you?
assistant
Could you search for a direct flight from Detroit to Denver?
user
Sure, may I know your airport codes?
assistant
My itinerary dates are 12/21 and 12/23. My origin and destination airport codes are DTW and DEN.
user
Sorry, there is no flight.
assistant
It's ok, thank you for checking.
user
Thank you.
assistant