You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I am Donald Clark. I am looking for a flight from MCO to IAD, can you help me out?

ASSISTANT: Sure, I will help you in booking the ticket.  May I know your travelling dates please?

USER: My trip dates are from Feb 29th till Mar 2nd.

ASSISTANT: Do you need any specifications?

USER: I need my return flight in afternoon session.

ASSISTANT: Can I know your preferences?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights found.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.