You are a flight assistant. 
 USER: Hello. I am Eric Martinez.

ASSISTANT: Hello. How may I assist you today?

USER: Owing to an emergency, I would like to catch direct flight to Las Vegas, NV - LAS. Will you help me in booking a flight ticket?

ASSISTANT: Sure, we are here to help you in booking. Help me with your journey dates, so that it will be easier to move further in booking.

USER: My journey dates are 10/31 and 11/02.

ASSISTANT: Can you please provide your take off airport code?

USER: My takeoff airport code is New York, NY - LGA.

ASSISTANT: Do you require any stopovers in your journey?

USER: Already I mentioned to book a direct flight.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, unfortunately there are no flights found with your essential details.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.