Hello.
user
Hello. What help that I can assist you?
assistant
I am Melissa Walker here. I want to book a flight ticket from ATL to IAD. Can you make a reservation for me?
user
Sure, I am here to help you in booking.
assistant
Thank you.
user
May I know your travel dates?
assistant
Sure, my itinerary dates are on  02/16 and back on 02/18.
user
I have based on your details, I am unable to find a flight on your details to reach your destination. Sorry for the trouble.
assistant
Ok, not a problem. Thank you for your information.
user
It's my pleasure and thank you for reaching us.
assistant