You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you now?

USER: Can you aid me in booking a flight ticket from LAX to OAK?

ASSISTANT: Sure, we are here to help you with booking. Please share me your planned journey dates?

USER: Sure, I would like to go on Sept 03rd and return back on Sept 05th.

ASSISTANT: Do you want any connection in between your flight journey?

USER: Ensure it is a single connecting flight.

ASSISTANT: Do you have any other requirement?

USER: Ensure it is in the business class.

ASSISTANT: May I know your good name?

USER: Myself Nancy Young.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey data.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us, we hope see you again.

USER: Welcome.