You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am planning to book a ticket to attend a meeting at PHL. Can you please help me out from JFK?

ASSISTANT: Sure, could you please share your trip dates?

USER: I am planning to travel on Aug 26 and return back on Aug 28.

ASSISTANT: Ok, could I have your name please?

USER: My name is Andrew Brown.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I am looking for a direct flight.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: That's fine, thank you for your service.

ASSISTANT: You are welcome, have a great day.