You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How best can I help you today?

USER: Can you please reserve me a flight ticket from IAD to CLT?

ASSISTANT: Sure, I am here to help you. Let me know your travelling dates.

USER: Sure, my travel dates are from Dec 01 to Dec 03.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Let me know your other specifications, if any.

USER: I would prefer economy class for my journey.

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

USER: Myself Karen Jackson.

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

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved with flight 1010.

USER: Thank you for your service.

ASSISTANT: My pleasure.