You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Kenneth Allen.

ASSISTANT: How may I assist you?

USER: I want to give a surprise to my brother by attending his convocation day on 03/29, can you please help me in booking a flight ticket on 03/27?

ASSISTANT: Sure, I am here to help you out. May I know your origin airport code and destination airport code please?

USER: My source is ATL and destination is DCA.

ASSISTANT: Spirit airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: You can reserve it.

ASSISTANT: Your ticket is booked with the flight-1029.

USER: Thank you.

ASSISTANT: Thank you for reaching us.