You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jessica Allen here.

ASSISTANT: How may I assist you at this moment?

USER: I am willing to travel to Austin, so I want a flight ticket from IAD to AUS. Can you please find a flight in this route?

ASSISTANT: Sure, I am here to guide you. Can I know your dates of travelling?

USER: Ok, my travelling dates are 05/18 and 05/20.

ASSISTANT: Ok, wait for a minute, so that I will check the flight availability.

USER: Ok, I can wait for your reply but I want a direct flight. So, please provide me the flight with this requirement.

ASSISTANT: Sorry to say that, there are no flight's available on based on your connection limit.

USER: It's ok, not a problem with that. Anyways thank you for spending your time.

ASSISTANT: Thank you for reaching us.