Hello.
user
Hello. How may I help you at this moment?
assistant
I am planning to visit Detroit, can you please book me a ticket from DCA to DTW?
user
Sure, I am here to help you with that. Can I know your planned trip dates?
assistant
My planned dates of journey are Mar 21 and Mar 23.
user
Do you have any other requirements?
assistant
I prefer to depart in the evening flight.
user
May I know your name?
assistant
My name is Gary Hill.
user
Do you have any class preference?
assistant
No.
user
Sorry to say that, there is no flight available based on your travelling dates.
assistant
Ok, not an issue. Thank you for providing information.
user
Thank you for reaching us.
assistant