You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please book the ticket from IAD to CLT? As I need to attend an interview.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, i would like to depart from my source location on 29th Feb and I want to return back by 2nd March.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I need direct flight.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I prefer economy class.

ASSISTANT: Can you please provide your name to proceed further?

USER: My name is Margaret Jackson.

ASSISTANT: Sorry, there are no flights available at your request.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for contacting us, have a nice day.