You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Ronald Jackson.

ASSISTANT: How may I assist you?

USER: I have a business meeting at Dallas this month. Can you please help me in reserving the ticket from EWR to DFW?

ASSISTANT: Ronald Jackson, may I know your travelling dates please?

USER: I am planning to leave on Dec 13 and again I will return back on Dec 15.

ASSISTANT: Flight-1012 is available for you with 0 connection at the price of 100 . Can I book it?

USER: My class preference is business class.

ASSISTANT: Sorry, there are no flights available with business class.

USER: Not a big deal, anyway thank you very much for your service.

ASSISTANT: Thank you for consulting our agency.