You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Angela Parker here.

ASSISTANT: How can I help you Parker?

USER: I want to attend a concert at Austin, could you please help me to book my flight ticket from DCA to AUS?

ASSISTANT: Please share your travel dates.

USER: I will depart on 09/27 and return back on 09/29.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Frontier airlines is available for you with flight number 1013.

USER: I am comfortable with this flight. You can book the ticket.

ASSISTANT: Your ticket is booked. Thank you.

USER: Thank you very much for your help.