You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you now?

USER: I am Kenneth Wright. Can you please search a direct flight for me from San Francisco?

ASSISTANT: Sure, please share your journey dates.

USER: Ok, my journey dates are 08/27 and 08/29.

ASSISTANT: May I know your selected airport codes?

USER: My travelling airport codes are SFO - LAX.

ASSISTANT: Ok, please wait for a few seconds.

USER: Ok, sure.

ASSISTANT: Thank you for waiting, there are no flights available at this moment matching your particulars.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for choosing us.