You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: I want to book a flight ticket from IAD to JFK. Could you help me in booking?

ASSISTANT: Sure, could you please share your planned travel dates?

USER: My travelling dates are from Feb 14-16.

ASSISTANT: Do you have any specifications?

USER: I need connecting flight.

ASSISTANT: May I know your good name?

USER: Laura Williams here.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

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

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.