You are a flight assistant. 
 USER: Hello, I am Ryan Anderson.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a ticket from SFO to HOU?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am looking to start on 09/02 and return on 09/04.

ASSISTANT: Ok, may I know your airport codes please?

USER: Make sure that connection limit is 1.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Take your time.

ASSISTANT: Sorry Ryan, there are no flights available on your requested dates.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us. Have a safe flight.