You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Virginia Walker. Can you help me in booking from PHL to JFK?

ASSISTANT: May I know your itinerary dates please?

USER: My travelling dates are from Apr 16 to Apr 18.

ASSISTANT:  May I know your preferable journey timings?

USER: I want to return in evening time.

ASSISTANT: Is there any another specifications on your trip, so that I can arrange like that only.

USER: I need a direct flight.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: Ok, No issues. Thank you.

ASSISTANT: Thanks for contacting us.