You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Samantha Moore.

ASSISTANT: How can I aid you today?

USER: Can you please avail me a direct flight from Washington, DC - DCA to reach New York, NY - LGA?

ASSISTANT: Sure, I will help you in finding the best flight.

USER: Thank you.

ASSISTANT: Could you please intimate your travelling dates?

USER: My trip dates are 04/20 - 04/22.

ASSISTANT: May I know your preferences?

USER: I can afford up to 500 only.

ASSISTANT: Please wait for a while, I will check the availability of flights.

USER: Sure.

ASSISTANT: Sorry Samantha Moore, no flights found on your requested travelling dates.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us, have a great day.