You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: Can you please reserve me a flight ticket from OAK to EWR?

ASSISTANT: Sure, I am perky to help you in reserving. May I know your travelling dates, please?

USER: Sure, my travel dates are from Dec 19 to Dec 21.

ASSISTANT: Do you have any limit on number of connections?

USER: I prefer to travel in a single connected flight.

ASSISTANT: May I know your other specifications, if any?

USER: No, I don't have any other requirements.

ASSISTANT: Please, share me your name to proceed further.

USER: Myself Angela Allen.

ASSISTANT: United airlines is providing you the direct flight in economy class, shall I reserve it?

USER: Ok, please reserve that flight ticket.

ASSISTANT: Your ticket has been reserved with flight 1003.

USER: Thank you for helping me.

ASSISTANT: My pleasure.