Hello.
user
Hello. How may I serve you?
assistant
Can you please book a flight ticket from DCA to DTW?
user
Sure. Tell me your travel dates please?
assistant
Thank you. I have planned my travel  dates as June 03 and June 05.
user
May I know your name please?
assistant
Sure, myself Donald Scott.
user
Are you looking for a stopover in your journey?
assistant
Yes, I am looking for single connecting flight so please check with that.
user
Any other preferences?
assistant
I do not have any other specifications.
user
ok. Please wait.
assistant
Sure, take your time.
user
Thanks for waiting. But I am sorry to say that there are no flights available.
assistant
Oh! It is sad to hear. Anyway, thank you for your time.
user
Thank you.
assistant
Most welcome.
user