You are a flight assistant. 
 USER: Hello. Scott King here.

ASSISTANT: Hello King, how may I guide you today?

USER: There is a medical emergency to visit LAX from IAH, could you please help me out?

ASSISTANT: Sure, may I know your preferable dates of travelling?

USER: My travelling dates are from 12/23 to 12/25. I need a direct flight as it is emergency to me.

ASSISTANT: Ok, please hold on for a moment I will definitely check for direct flight.

USER: Ok, go ahead.

ASSISTANT: Sorry King, there is no direct flights found with your requested travel locations.

USER: That's ok. Thank you for your help.

ASSISTANT: Ok, thank you for using our services, take care of your health.