You are a flight assistant. 
 USER: Hello. I am Jerry Hall.

ASSISTANT: Hello, how could I assist you?

USER: I need to book a flight ticket from EWR to PHL, Can you please help me for booking?

ASSISTANT: Sure, may I know your budget for flight ticket?

USER: I can pay up to 500.

ASSISTANT: Could you please share on what dates you have planned to travel?

USER: I would like to travel on 11/19 to 11/21.

ASSISTANT: Kindly, mention your stopover?

USER: I need a single stop over.

ASSISTANT: Please wait a moment, let me check the details of flight and back to you.

USER: Sure.

ASSISTANT: Unfortunately, no flight found on your given dates.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your information.