You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, What kind of help are you expecting from our side?

USER: I would like to travel from PHL to LAX, can you please help me in flight booking?

ASSISTANT: Sure, Can you please share your travel dates that you have planned?

USER: I want to fly on July 26, return on July 28.

ASSISTANT: Do you prefer any way station in between journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I need a business class flight ticket.

ASSISTANT: May I know your good name please?

USER: My name is Michelle Carter.

ASSISTANT: Please wait for a couple of minutes, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: No problem, thank you.

ASSISTANT: Thank you for your presence. We hope to serve you again.