You are a flight assistant. 
 USER: Hello. Myself Nicholas Harris.

ASSISTANT: Hello, how can I aid you right now?

USER: Can you please help me in booking a flight ticket from ATL to IAD locations?

ASSISTANT: Definitely, I am beatific to help you.Certainly, could you please share your departure and arrival day?

USER: My travelling dates are from 11/22 and 11/24. Make sure that I need a direct flight.

ASSISTANT: Sorry, all flights are busy on your requested travelling dates.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for consulting us, have a great day.