You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name please?

USER: This is Virginia Martinez.

ASSISTANT: OK Virginia, how can I help you?

USER: Can you help me for booking a flight  ticket from PA-PHL to GA-ATL .

ASSISTANT: Sure, can you please tell me the travelling dates of your journey?

USER: Sure,my travelling dates are 05/19 to 05/21.

ASSISTANT: OK, please wait for a moment.

USER: I need only 0 connection flight and price range is 500.

ASSISTANT: Thank you for waiting Virginia, there is no flight with 0 connections.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.