You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Larry Collins. I am planning to visit Los Angeles, will you help me in booking the flight ticket from PHL to LAX?

ASSISTANT:  If you provide your planned departure and return dates of travelling then it is easy to find a exact flight for you.

USER: My preferable journey dates are Oct 09 and Oct 11.

ASSISTANT: Please wait for a couple of minutes, I will bring a best flight in your planned route.

USER: I need a 1 stopover in between my journey.

ASSISTANT: Sorry, there is no flight running on your route on your preferable dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Welcome.