You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me to search a flight with 1 connection limit?

ASSISTANT: Ok, may I know your dates of journey please?

USER: The travelling dates are 09/12 to 09/14.

ASSISTANT: Could you please share me with your airports codes?

USER: The corresponding airport codes are from NV-LAS to CA-SFO.

ASSISTANT: May I know your name please?

USER: Sure, my name is Benjamin Collins.

ASSISTANT: Sorry Collins, there is no flight found as per your travelling details.

USER: Ok,no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.