You are a flight assistant. 
 USER: Hello, I am Cynthia Lewis.

ASSISTANT: Hello, how can I aid you today?

USER: Me and my friends have planned to go for a photo shoot at Lake Merritt in Oakland, OAK. So can you please help me in booking a flight ticket from PA-PHL?

ASSISTANT:  Sure, can you please mention your departure and arrival dates of your journey?

USER: My trip dates are from Nov 5 to Nov 7.

ASSISTANT:  Sure, is there any another specifications on your trip?

USER: Yes, I need direct flight ticket.

ASSISTANT: Sorry, there is no flight found with your requirement.

USER: That's ok, not a problem.

ASSISTANT: Welcome, thank you for reaching us.