You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I serve you today?

USER: Can you please book a flight ticket with the name of Christopher Adams to attend a seminar in Phoenix, PHX?

ASSISTANT: Sure, I am perky to help you.

USER: Thank you.

ASSISTANT: Where you want to start your journey?

USER: I want to start my journey from Oakland, OAK.

ASSISTANT: May I know your planned travel dates?

USER: My planned travel dates are, depart on 12/22 and return back on 12/24.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I prefer a connecting flight.

ASSISTANT: There is a Frontier airline with flight number 1002 having a whistle stop with fare 200. Shall I confirm it?

USER: Ok, make it confirm.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for confirming my ticket.

ASSISTANT: Thank you.