You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Cynthia Clark here.

ASSISTANT: How may I help you out?

USER: I want to travel from IAD to JFK for attending a Seminar. Can you please help me for booking the flight ticket?

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

USER: My travelling dates are from 07/25 to 07/27.

ASSISTANT: There is a flight with connection 1 and price 900, can I proceed?

USER: Make sure my price limit is 500.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.