You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I have to attend a Music Concert at Phoenix, could you please help me with booking a flight ticket from IAD to PHX?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: I would like to depart on Dec 19th and return on Dec 21st.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any preferences?

USER: I have no other preferences.

ASSISTANT: May I know your name please?

USER: I am Ronald Allen.

ASSISTANT: UA airlines is providing you a flight with a ticket fare 100, shall I proceed with booking?

USER: Please confirm the booking.

ASSISTANT: Your ticket has been confirmed with the flight-1023 in economy class.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Welcome, have a safe trip.