You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Laura Garcia. Can you aid me in finding a flight from HOU to IAD?

ASSISTANT: Sure, can I know your trip dates please?

USER: My trip dates will be Aug 31 to Sep 02.

ASSISTANT: Do you have any airliner preferences?

USER: I need a normal cost flight.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.