You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Paul Allen. Can you please help me in booking the flight ticket from EWR to LGA?

ASSISTANT: Sure, help me with the trip dates?

USER: My travel dates are 08/17 and 08/19.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight.

ASSISTANT: Sorry, there were no flights available in your desired routes.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for reachnig us.