You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I want to travel in a business class flight, can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: Thank you for accepting my request, my departure is on June 12 and please book my return ticket on June 14.

ASSISTANT: Kindly assign your corresponding airport codes?

USER: Sure, I will prefer PHL and ATL as my origin and destination airports respectively.

ASSISTANT: Do you prefer any lay by in between journey?

USER: Yes, I need a lay.

ASSISTANT: Is there any another specifications on your trip, so that I can arrange like that only.

USER: No.

ASSISTANT: May I know your good name please?

USER: Sure, my name is William Phillips.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure, take your time.

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

USER: Oh! Sad to hear that. Anyway, I will find another alternative. Thank you for the information.

ASSISTANT: Thanks for approaching us, wish you a great day.