You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in booking a flight ticket from EWR to DEN?

ASSISTANT: Sure, may I know your trip dates?

USER: I want to fly on July 23 and return on July 25.

ASSISTANT: Any requirement to be met?

USER: I need a direct airline.

ASSISTANT: Can you mention your name to proceed further?

USER: Myself Ryan Lee.

ASSISTANT: Southwest Airlines has a direct flight with number 1002 for fare 200, shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.