You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: Can you please help me in searching a flight ticket with 0 connection flight?

ASSISTANT: Sure, I am here to help you. Could you please share your journey dates to search a flight availability?

USER: Ok, my journey dates are 08/12 and 08/14.

ASSISTANT: May I know your source and destination airport codes?

USER: My source code is LAS and my destination airport code is BOS.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, no flight is available for you.

USER: Ok, fine not an issue. Thank you for checking.

ASSISTANT: May I know your name for documentation?

USER: Alexander Jones is my name.

ASSISTANT: Thank you for choosing us, have a nice day.