You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Samuel Anderson here, please help me with a direct flight to Austin as it is an urgent case.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: could you please let me know your airport codes?

USER: Sure, I will start from IAH and land at AUS.

ASSISTANT: Do you please any lay by in between your journey?

USER: I have already mentioned above that I need a direct flight.

ASSISTANT: When are you willing to travel?

USER: My journey dates are 08/31 and 09/02.

ASSISTANT: Thanks for sharing your information. Please hold on.

USER: Ok.

ASSISTANT: Thanks for your patience. Unfortunately there are no flights found with your requirements.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for picking us.