You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at this moment?

USER: My name is George Parker. I am searching for a direct flight, due to an emergency.

ASSISTANT: Sure, please wait for a moment. Can I have your journey dates?

USER: Sure, my travelling dates are 12/21 and 12/23. My airport codes are OAK and OAK.

ASSISTANT: Ok, please give me a moment. Sorry, there is no direct flight available on your required dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.