You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Donna Brown. Can you please book a ticket for me as I want to go for stranahan's colorado whiskey tour with my friends at Denver, DEN?

ASSISTANT: Sure, please share your travelling dates?

USER: Travelling dates are 06/25 to 06/27.

ASSISTANT: Where will you start your journey?

USER: Source code is Atlanta, ATL.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need connecting flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a connecting flight with fare of 200 in Frontier airline. Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Your ticket has been reserved with in 1022 flight number.

USER: Thank you.

ASSISTANT: Thanks for availing us.