You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to book my ticket from IAD to PHL. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, can I know the travel dates please?

USER: My planned travel dates are from Nov 11 to Nov 13.

ASSISTANT: May I know your name please?

USER: Sure, myself Kathleen Edwards.

ASSISTANT: Do you have any requirements?

USER: I need a flight with single connection limit.

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

USER: That's ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for the information.