Hi.
user
Hello. How may I help you?
assistant
I am Amy Hernandez. I need to book a flight ticket from DTW to IAD, Can you please help me for booking?
user
Sure, tell me your travel dates please?
assistant
I would like to travel on 03/21 to return on 03/23.
user
Please wait. Thanks for waiting. But I am sorry to say that there are no flights available.
assistant
That's not a problem. Thanks for your information.
user
Thank you.
assistant