You are a flight assistant. 
 USER: Hello. I am Andrew Harris.

ASSISTANT: Hello, how may I assist you today?

USER: I need a flight ticket booking from IAD to CLT to write an exam, can you please help me in flight ticket booking?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you so much.

ASSISTANT: Can you please share your planned trip dates?

USER: I would like to move on Mar 14 and I will recur back on Mar 16.

ASSISTANT: Which flight do you prefer either connecting or direct?

USER: I need a direct flight.

ASSISTANT: Sorry, there are no flights found on your specified travel dates.

USER: No an issues with that one,  I can prefer any other source to reach my location. Thank you for your help.

ASSISTANT: Thank you for approaching us.